diff --git a/cis/private/lehre/abgabe_student.php b/cis/private/lehre/abgabe_student.php
index 20311ea90..5935ad69c 100644
--- a/cis/private/lehre/abgabe_student.php
+++ b/cis/private/lehre/abgabe_student.php
@@ -88,11 +88,16 @@ $htmlstr = '';
 $htmlstr1 = '';
 $vorname='';
 $nachname='';
+$zweitbetreuer = '';
 
 $sql_query = "SELECT (SELECT nachname FROM public.tbl_person  WHERE person_id=tbl_projektbetreuer.person_id) AS bnachname, 
 			(SELECT vorname FROM public.tbl_person WHERE person_id=tbl_projektbetreuer.person_id) AS bvorname, 
 			(SELECT titelpre FROM public.tbl_person WHERE person_id=tbl_projektbetreuer.person_id) AS btitelpre, 
 			(SELECT titelpost FROM public.tbl_person WHERE person_id=tbl_projektbetreuer.person_id) AS btitelpost, 
+			(SELECT person_id FROM lehre.tbl_projektbetreuer WHERE projektarbeit_id=tbl_projektarbeit.projektarbeit_id
+			AND betreuerart_kurzbz IN ('Zweitbetreuer', 'Zweitbegutachter') LIMIT 1) AS zweitbetreuer_person_id,
+			(SELECT betreuerart_kurzbz FROM lehre.tbl_projektbetreuer WHERE projektarbeit_id=tbl_projektarbeit.projektarbeit_id
+			AND betreuerart_kurzbz IN ('Zweitbetreuer', 'Zweitbegutachter') LIMIT 1) AS zweitbetreuer_betreuerart_kurzbz,
 			tbl_projektbetreuer.person_id AS betreuer_person_id, 
 			tbl_projekttyp.bezeichnung AS prjbez, * 
 		FROM lehre.tbl_projektarbeit 
@@ -127,18 +132,25 @@ else
 				<th>".$p->t('abgabetool/betreuer')."</th>
 				<th>".$p->t('abgabetool/typ')."</th>
 				<th>".$p->t('abgabetool/titel')."</th>
-				<th>".$p->t('abgabetool/betreuerart')."</th>";
+				<!--<th>".$p->t('abgabetool/betreuerart')."</th>-->";
 	$htmlstr .= "</tr></thead><tbody>\n";
 	$i = 0;
 	while($row=$db->db_fetch_object($erg))
 	{
-		$htmlstr1='';
+		$htmlstr1 = '';
+		$zweitbetreuer_obj = new person();
+		if ($zweitbetreuer_obj->load($row->zweitbetreuer_person_id))
+		{
+			$zweitbetreuer = ', <b>'.$db->convert_html_chars($row->zweitbetreuer_betreuerart_kurzbz).'</b>: '.$zweitbetreuer_obj->titelpre.' '.$zweitbetreuer_obj->vorname.' '.$zweitbetreuer_obj->nachname.' '.$zweitbetreuer_obj->titelpost;
+		}
+		$htmlstr1 = '<b>'.$db->convert_html_chars($row->betreuerart_kurzbz).'</b>: ';
 		$vorname=$row->vorname;
 		$nachname=$row->nachname;
 		$uid=$row->uid;
-		($row->btitelpre!=''?$htmlstr1 = $row->btitelpre.' ':$htmlstr1 .= '');
+		($row->btitelpre!=''?$htmlstr1 .= $row->btitelpre.' ':$htmlstr1 .= '');
 		$htmlstr1 .= $row->bvorname.' '.$row->bnachname;
 		($row->btitelpost!=''?$htmlstr1 .= ' '.$row->btitelpost:$htmlstr1 .= '');
+		$htmlstr1 .= $zweitbetreuer;
 		$htmlstr .= "   <tr>\n"; //class='liste".($i%2)."'
 		$htmlstr .= "       <td><a href='abgabe_student_details.php?uid=".$row->uid."&projektarbeit_id=".$row->projektarbeit_id."&bid=".$row->betreuer_person_id."' target='as_detail' title='Details anzeigen'>".$p->t('abgabetool/upload')."</a></td>\n";
 		$htmlstr .= "       <td>".$row->studiensemester_kurzbz."</td>\n";
@@ -164,7 +176,7 @@ else
 		$htmlstr .= "       <td>".$htmlstr1."	    </td>\n";
 		$htmlstr .= "       <td>".$db->convert_html_chars($row->prjbez)."</td>\n";
 		$htmlstr .= "       <td>".$db->convert_html_chars($row->titel)."</td>\n";
-		$htmlstr .= "       <td>".$db->convert_html_chars($row->betreuerart_kurzbz)."</td>\n";
+// 		$htmlstr .= "       <td>".$db->convert_html_chars($row->betreuerart_kurzbz)."</td>\n";
 		$htmlstr .= "   </tr>\n";
 		$i++;
 	}
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diff --git a/skin/images/texpic.jpg b/skin/images/texpic.jpg
deleted file mode 100644
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diff --git a/skin/images/true-27.png b/skin/images/true-27.png
deleted file mode 100644
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diff --git a/skin/images/true.gif b/skin/images/true.gif
deleted file mode 100644
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diff --git a/skin/images/true_green.png b/skin/images/true_green.png
deleted file mode 100644
index b1628ee7f..000000000
Binary files a/skin/images/true_green.png and /dev/null differ
diff --git a/skin/images/tw_logo_01.jpg b/skin/images/tw_logo_01.jpg
deleted file mode 100644
index 096cb6539..000000000
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diff --git a/skin/images/tw_logo_weiss.png b/skin/images/tw_logo_weiss.png
deleted file mode 100644
index 59214d96b..000000000
Binary files a/skin/images/tw_logo_weiss.png and /dev/null differ
diff --git a/skin/images/uebung_copy.jpg b/skin/images/uebung_copy.jpg
deleted file mode 100644
index ce9791db8..000000000
Binary files a/skin/images/uebung_copy.jpg and /dev/null differ
diff --git a/skin/images/upload.jpg b/skin/images/upload.jpg
deleted file mode 100644
index 8c28e33ea..000000000
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diff --git a/skin/images/user-trash-full.png b/skin/images/user-trash-full.png
deleted file mode 100644
index 462ef399d..000000000
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diff --git a/skin/images/user_add.png b/skin/images/user_add.png
deleted file mode 100644
index deae99bcf..000000000
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diff --git a/skin/images/viewdok.gif b/skin/images/viewdok.gif
deleted file mode 100644
index 8b31a78c5..000000000
Binary files a/skin/images/viewdok.gif and /dev/null differ
diff --git a/skin/images/vilesci-screenshot.png b/skin/images/vilesci-screenshot.png
deleted file mode 100644
index c3ec87ccf..000000000
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diff --git a/skin/images/word2007.jpg b/skin/images/word2007.jpg
deleted file mode 100644
index 7c387bf26..000000000
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diff --git a/skin/images/x-office-presentation.png b/skin/images/x-office-presentation.png
deleted file mode 100644
index 047355c7d..000000000
Binary files a/skin/images/x-office-presentation.png and /dev/null differ
diff --git a/skin/images/xlspic.gif b/skin/images/xlspic.gif
deleted file mode 100644
index 6c8b2afed..000000000
Binary files a/skin/images/xlspic.gif and /dev/null differ
diff --git a/skin/images/xml.png b/skin/images/xml.png
deleted file mode 100644
index b823f8013..000000000
Binary files a/skin/images/xml.png and /dev/null differ
diff --git a/skin/images/zippic.gif b/skin/images/zippic.gif
deleted file mode 100644
index 3af93f229..000000000
Binary files a/skin/images/zippic.gif and /dev/null differ
diff --git a/skin/images/zippic.jpg b/skin/images/zippic.jpg
deleted file mode 100644
index 09608727a..000000000
Binary files a/skin/images/zippic.jpg and /dev/null differ
diff --git a/vilesci/lehre/einheit_det.php b/vilesci/lehre/einheit_det.php
index 3487bfa2a..5966e0af1 100644
--- a/vilesci/lehre/einheit_det.php
+++ b/vilesci/lehre/einheit_det.php
@@ -47,27 +47,33 @@ if(empty($kurzbz))
 
 if (isset($_POST['new']))
 {
-	if(!$rechte->isBerechtigt('lehre/gruppe',null,'sui'))
-		die($rechte->errormsg);
-
-	$e = new benutzergruppe();
-	$uid = $_POST['uid'];
-	if (!$e->load($uid, $kurzbz))
-	{	
-		$e->new=true;
-		$e->gruppe_kurzbz = $kurzbz;
-		$e->updateamum = date('Y-m-d H:i:s');
-		$e->updatevon = $user;
-		$e->insertamum = date('Y-m-d H:i:s');
-		$e->insertvon = $user;
-		$e->uid = $uid;
-		if(!$e->save())
-			die($e->errormsg);
+	$benutzer = new benutzer();
+	if ($benutzer->load($_POST['uid']))
+	{
+		if(!$rechte->isBerechtigt('lehre/gruppe',null,'sui'))
+			die($rechte->errormsg);
+	
+		$e = new benutzergruppe();
+		$uid = $_POST['uid'];
+		if (!$e->load($uid, $kurzbz))
+		{	
+			$e->new=true;
+			$e->gruppe_kurzbz = $kurzbz;
+			$e->updateamum = date('Y-m-d H:i:s');
+			$e->updatevon = $user;
+			$e->insertamum = date('Y-m-d H:i:s');
+			$e->insertvon = $user;
+			$e->uid = $uid;
+			if(!$e->save())
+				die($e->errormsg);
+		}
+		else 
+		{
+			$errormsg = '<span class="error">Diese Person ist bereits der Gruppe zugeteilt</span>';
+		}
 	}
 	else 
-	{
-		$errormsg = '<span class="error">Diese Person ist bereits der Gruppe zugeteilt</span>';
-	}
+		$errormsg = '<span class="error">UID '.$_POST['uid'].' wurde nicht gefunden</span>';
 }
 else if (isset($_GET['type']) && $_GET['type']=='delete')
 {
@@ -80,7 +86,7 @@ else if (isset($_GET['type']) && $_GET['type']=='delete')
 
 $gruppe = new gruppe();
 if(!$gruppe->load($kurzbz))
-		die('Gruppe wurde nicht gefunden:'+$kurzbz);
+	die('Gruppe wurde nicht gefunden:'+$kurzbz);
 
 ?>
 <!DOCTYPE html>
@@ -109,7 +115,7 @@ if(!$gruppe->generiert)
 	echo '
 	<FORM name="newpers" method="post" action="einheit_det.php">
 	  Name: <INPUT type="hidden" name="type" value="new">
-		<input type="text" name="uid" id="uid"/>
+		<input type="text" name="uid" id="uid" autofocus="autofocus" />
 		<script type="text/javascript">
 		$(document).ready(function()
 		{
@@ -131,6 +137,7 @@ if(!$gruppe->generiert)
 				}
 			});
 		});
+		$("#uid").focus();
 		</script>
 		 <INPUT type="hidden" name="kurzbz" value="'.$kurzbz.'">
 	  <INPUT type="submit" name="new" value="Hinzuf&uuml;gen">
diff --git a/vilesci/stammdaten/dokumentvorlagen_verwaltung.php b/vilesci/stammdaten/dokumentvorlagen_verwaltung.php
index f21e4d802..51e1e54b8 100644
--- a/vilesci/stammdaten/dokumentvorlagen_verwaltung.php
+++ b/vilesci/stammdaten/dokumentvorlagen_verwaltung.php
@@ -55,25 +55,16 @@ if(!$rechte->isBerechtigt('basis/dokumente'))
 	die($rechte->errormsg);
 }
 
-echo '
-<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//DE" "http://www.w3.org/TR/html4/strict.dtd">
+echo '<!DOCTYPE HTML>
 <html>
 	<head>
 		<title>Dokumentvorlagen Verwaltung</title>
+		<meta charset="UTF-8" />
+		<link rel="stylesheet" href="../../skin/tablesort.css" type="text/css"/>
 		<link rel="stylesheet" href="../../skin/vilesci.css" type="text/css">
-		<meta http-equiv="content-type" content="text/html; charset=UTF-8" />
-		<link rel="stylesheet" type="text/css" href="../../skin/jquery-ui-1.9.2.custom.min.css">
-<script type="text/javascript" src="../../vendor/jquery/jqueryV1/jquery-1.12.4.min.js"></script>
-<script type="text/javascript" src="../../vendor/christianbach/tablesorter/jquery.tablesorter.min.js"></script>
-<script type="text/javascript" src="../../vendor/components/jqueryui/jquery-ui.min.js"></script>
-<script type="text/javascript" src="../../include/js/jquery.ui.datepicker.translation.js"></script>
-<script type="text/javascript" src="../../vendor/jquery/sizzle/sizzle.js"></script>
-		<link rel="stylesheet" href="../../skin/tablesort.css" type="text/css"/>
-		<link href="../../skin/jquery-ui-1.9.2.custom.min.css" rel="stylesheet" type="text/css">
 		<script type="text/javascript" src="../../vendor/jquery/jqueryV1/jquery-1.12.4.min.js"></script>
 		<script type="text/javascript" src="../../vendor/christianbach/tablesorter/jquery.tablesorter.min.js"></script>
-		<script type="text/javascript" src="../../vendor/components/jqueryui/jquery-ui.min.js"></script>
-		<script type="text/javascript" src="../../include/js/jquery.ui.datepicker.translation.js"></script>
+		<script type="text/javascript" src="../../vendor/jquery/sizzle/sizzle.js"></script>
 		<script type="text/javascript">
 			$(document).ready(function()
 			{
@@ -279,7 +270,7 @@ if ((isset($_GET['neueVorlage']) && $_GET['neueVorlage'] == 'true'))
 					<tr>
 						<td>Mimetype</td>
 						<td>
-							<textarea cols="80" rows="4" name="neueVorlage_mimetype"></textarea>
+							<textarea cols="80" rows="4" name="neueVorlage_mimetype">application/vnd.oasis.opendocument.text</textarea>
 						</td>
 					</tr>
 					<tr>
@@ -441,7 +432,7 @@ else
 				</tr>
 				<tr>
 					<td>Aktiv</td>
-					<td><input type="checkbox" name="aktiv" id="aktiv" '.($vorlageOE->aktiv==true?'checked="checked"':'').'"></td>
+					<td><input type="checkbox" name="aktiv" id="aktiv" '.($vorlageOE->aktiv==true?'checked="checked"':'').'></td>
 				</tr>';
 			if(!$neu)
 				$val = 'Änderung Speichern';