Upgrade bootstrap.css to v3.2.0

Drop normalize.css since bootstrap.css already contains it.
Add some Bootstrap styles
Show Bootstrap icons in links and button
Remove bootstrap.js since it is not used in the scaffold
Yesod 1.4
Merge branch 'postgres' into mysql

Conflicts:
	PROJECTNAME.cabal
Merge branch 'bootstrap3' of https://github.com/iquiw/yesod-scaffold into postgres
Merge branch 'postgres' into mysql