Designer: Remove unnecessary connect

It also connects to a signal that will be removed soon.

Change-Id: Ib5bbfb3d72d08280317069068d71ed08e5159d8f
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Jarek Kobus <jaroslaw.kobus@digia.com>
Reviewed-by: Eike Ziller <eike.ziller@digia.com>
AndroidManifestEditor: Be less noisy with changed() signals

Changed signal shouldn't be sent on all contents changes, but only if
the modification state changes.

Change-Id: I2fda12b5ded56eac4eec8cf6a428c04b18b576ec
Reviewed-by: Daniel Teske <daniel.teske@digia.com>