Updated to Yesod 1.2
Merge pull request #25 from pSub/yesod-1.2

Updated to Yesod 1.2
Merge branch 'flag-for-building-examples' of https://github.com/pSub/HWebUI into pSub-flag

Conflicts:
	HWebUI.cabal
added flag to readme
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