[TASK] BE-Modules not migrated to ExtJS4 need to trigger compat-Mode

EM, Recycler and Workspaces are not migrated yet. Thus they are broken.
It's hard to work without the Extension Manager.

Use it within Recycler and EM.

Change-Id: I82ba17fe90c408435bf8370e832807c5ba79d6b3
Resolves: #32185
Releases: 4.7
Reviewed-on: http://review.typo3.org/7428
Reviewed-by: Oliver Hader
Tested-by: Oliver Hader