new message senderId to specify the sender for all the messages
- jobs/OneTimeMessages->sendMessageToApplicantsStillWaiting adapted code
to make use of the new method CLMessagesModel->sendExplicitTemplateSenderId
- jobs/OneTimeMessages->sendMessageToApplicantsStillWaiting now logs the
number of prestudents retrieved from database
- Renamed CLMessagesModel->sendExplicitTemplate as CLMessagesModel->sendExplicitTemplateSenderId
- Added new parameter sender_id to CLMessagesModel->sendExplicitTemplateSenderId to specify the sender person id
- Added new public method sendExplicitTemplate to CLMessagesModel as
wrapper method for sendExplicitTemplateSenderId
- CLMessagesModel->sendExplicitTemplate tries to retrieve the sender id
from the authentication session