Do not use toWidget, use whamlet consequentely
Added Wall to all builds
Removed unused imports in examples and a bit clean up
Removed unused imports in library code, added type signatures and minor changes
Use the widget type synonym that is generated by mkYesod
Define language extensions used in the library in the cabal file
Merge pull request #27 from pSub/master

Enabled and fixed several warnings, remove toWidget and minor changes