Git: Fix crash on quit while rebase-todo editor is open

Change-Id: I458cbb2168642f226583b406e34596d223c7d5ea
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>
Squish: Improve invokeMenuItem()

Change-Id: I977a9465a944f30fc195e6072f50b663f5d4d24d
Reviewed-by: Robert Loehning <robert.loehning@digia.com>
Doc: attaching to running app while debugging

Change-Id: I3566c77bfb8466005db12fd4a77c861a07f69019
Reviewed-by: Aurindam Jana <aurindam.jana@digia.com>
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@digia.com>