Force updating of Essential components.

Task-number: QTIFW-38
Task-number: QTIFW-155

This is necessary for correct functioning of the Maintenance Tool.

Change-Id: I3844760bdd31abf547c660f82dda14a3da38c5da
Reviewed-by: Niels Weber <niels.weber@digia.com>
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@digia.com>
Reviewed-by: Tim Jenssen <tim.jenssen@digia.com>
Fix broken "Next" button behavior after uncheck/check of a component.

Change-Id: I7cc36df32594a57442bc316e7c271fc00c0ad4a2
Reviewed-by: Niels Weber <niels.weber@digia.com>
Reviewed-by: Tim Jenssen <tim.jenssen@digia.com>