Work in progress version of the api get serialization. Broken atm, committed only for Veeru to add the model modifications which are required for the future development
settings.py
   - Changed email-prefix
   - Fixed Emailbacked

Layout
   - Created navigation block
added uniquetitle feild to item and collection models
Merge branch 'devel' of https://github.com/koulutuksenpilvivayla/pilvivayla-basaari into devel
First ajax working
Merge branch 'devel' of https://github.com/koulutuksenpilvivayla/pilvivayla-basaari into ajax
Working POST thing which creates collections and does related error checking. Doesn't save the materialItems yet. Almost there though.
POST and GET functionality. Now user can add new items to the database and see their contents afterwards with GET. Added slugifying to the materialItem names and collection creation code.

Note that even though the code *seems* to work now, there is many TODO things there and the code should be tested before going further. Also, when using GET, the screenshot and video fields have to be dePickled which is not implemented atm.
Cosmetic changes
New test page with the other layout
Merge branch 'devel' of https://github.com/koulutuksenpilvivayla/pilvivayla-basaari into ajax
Remove first version of fronted. Just second kept