Adds colorpicker form widget, add initial form for customizing backend
Dedicated layout partial for custom styles
Merge branch 'develop' into customize-backend
Add LESS ability to rendering custom backend less
Moved asset combiner to the system module
Add light/dark variations of primary/secondary colors
BackendSettings -> BrandSettings
pageTitle is now translated at the end of the line
Fixed unit tests so they pass
SettingsModels are now cached
Merge branch 'customize-backend' into develop