Add search to key binding tab, continue on key binding in menu

...ypad/layout/desktop/DesktopMenuToolbarViewController.java

.../playpad/layout/touch/TouchMenuToolbarViewController.java

...ias/playpad/viewcontroller/main/MainViewControllerV2.java

...d/viewcontroller/option/global/KeysTabViewController.java

...re/src/de/tobias/playpad/settings/keys/KeyCollection.java