Revision 553370

Fix bug 124501 (Some keyboard shortcuts bound twice) and 128984 ("Jump to folder" kbd shortcut hardcoded).
Don't use a QAccel. For one we already have an appropriate KAccel (actioncollection()->kaccel()). Moreover, using QAccel breaks the configurability of kbd shortcuts. KAction->plugAccel is deprecated but I don't see what else to use. I guess the additional plugAccel shouldn't be necessary, but at least for Return the accel didn't work out of the box (probably because the corresponding KAction doesn't appear in any menu or toolbar).

BUGS: 124501
CCBUGS: 128984