Hacky fixes for bugs

Main changes:
-made it work with webapp2
-fixed bug with deleting cards (resultant from update to jQuery that made $(this) not behave as you originally intended)
-fixed bug with cards not updating when add new ones (resultant from caching)

I just hackily fixed them to work for my purposes, obviously not the best solutions. I also retabbed some things while vimming around, sorry.