tweaks colors on login, cleanup tree data
Merge branch 'master' of https://github.com/umbraco/Belle

Conflicts:
	Umbraco.Belle.Client/build/belle/js/app.js
	Umbraco.Belle.Client/build/belle/js/umbraco.controllers.js
	Umbraco.Belle.Client/build/belle/js/umbraco.directives.js
	Umbraco.Belle.Client/build/belle/js/umbraco.filters.js
	Umbraco.Belle.Client/build/belle/js/umbraco.resources.js