Dolphin[Qt|WX]: Miscellaneous cleanup.

DolphinQt:
 * Make the connect() calls explicit, not automatic
 * Follow better naming convention for the QActions
 * Remove the Open action from the toolbar.

Dolphin[Qt|WX]:
 * Move the "Skip Bundle" option to the root CMakeLists so that both DolphinQt and DolphinWX can use it.
-0 on that, why do you want the comment at the end of the line instead of above it?
I'd rather make the comment itself more expressive on why that directory is included.