iPeer v3.1.5 is released

This is a maintenance release. It fixes the following bugs:

• Fixed emails templates filling in wrong names.
• Fixed bug where empty ipeer evaluation reminder emails were sent
• Added system.version parameter to delta7
• Updated vagrant and puppet modules
• Fixed missing formLoaded parameter in event editing
• Fixed the failed test and update version in sample data
• Moved delta 5 into delta 4 and remove sql mode in 6
• Fixed some bugs && temporarily removed show student events
• Fixed releasing comments for student view of evaluation results
• Added commands to refresh the cache directory into the upgrade script
• Implemented some validations to event edit
• Fixed super admins unable to view all instructors and faculty admins
• Created upgrade script to version 3.1.4
• Fixed events add/edit event forms

For the upgrade, please refer to the Upgrade page.