Releases week 2

Fronter standard (applicable to all)

• Equation does not appear in edit mode (equation editor)
• Equation editor does not open in a new window
• Latex code showing instead of equation in test
• Webfronter pages are not purged from the cache when updated
• Whitelisted noteflight.com
• Anonoymous tests shows one students answer for all when looking at answers in Statistics > General in a test
• Remove unique user id from data connected to a user when the user is permanently deleted

• issues with deleting plans without an id is now solved
• upgrade of database backend to improve performance 

• smaller patches to deliver Malta eID level 3