- renamed methods "saveStudienjahr" and "saveStudiensemester" und Studienjahr and Studiensemester controller to clearer "updateStudienjahr" and "updateStudiensemester"
- Replaced base_url that contains "index.ci.php" with site_url
- Replaced APP_ROOT with base_url or site_url where needed
- InfoCenter controller added comments and improved the code
called html_escape function for all textfields before saving (against html injection)
Reformatted
Fixed Studienjahr Dropdown prefill in Studiensemester view