[BUGFIX] Use page uid for overlay
Merge pull request #563 from FluidTYPO3/shortcut_overlay

[BUGFIX] Use page uid for overlay
[BUGFIX] Don't re-dispatch content-length with active BE sessions
Merge pull request #564 from bjo3rnf/debugrendering

[BUGFIX] Don't re-dispatch content-length with active BE sessions
[BUGFIX] No early return on empty menu in deferred rendering mode
Merge pull request #568 from bjo3rnf/deferredfix

[BUGFIX] No early return on empty menu in deferred rendering mode