CMSShared: BlockInstances now auto-sorted on load into BlockMananger
CMSPage: CoreJS

Temporarily disabled block toolbars in page-core
CMSPage: Bureau new homepage styles

Modified to not do stupid blanket changes to section tags (why,
reactive, why?).
Remove background from container.
CMSPageBundle: Toolbars and Bureau Logo

Added Bureau homepage logo to assets.
Toolbars again relatively position. Toobars need more work.