- ReaderConfig does not need to call again self:initGesListener() on
screen rotation/resize, as it uses the TouchZone infrastructure
that deals itself with rotation. So, it was adding new gestures
that were overriding tap on footer and preventing it from working.
- ReaderFooter: fix refresh area (which was too small when toggling
from hidden to visible)
- ReaderToc: fix crash when showing TOC in scroll mode after rotation
- Menu: fix crash when no onReturn defined (could happen when tap on
bottom left corner when showing an empty TOC)