Reviewed-by: Kai Koehne

This is in line with the other buildstep UIs.

Reviewed-by: dt

Causes headaches because of a bug in qmake that sometimes still tries
to compile the _moc file individually, resulting in not defined errors.

QtDeclarative checks for the capitalization of .qml files. This might fail
for relative pathes if the working directory is not capitalized like on disk
(QTBUG-17529).

Task-number: QTCREATORBUG-3722
Reviewed-by: dt

Removing an object watch might fail if e.g. the app crashes in between.

Leave event would close the widget.

Fix build configurations among other things.

Task-number: QTCREATORBUG-3821

Remove duplicate code, proper messages, linguist comments.

Task-number: QTCREATORBUG-3821

Otherwise it's possible to remove the tool bar without ever getting it
back.

Only the ClientProxy uses it anyway.

Reviewed-by: Thorbjorn Lindeijer

Task-number: QTCREATORBUG-3813

Seems it's not only theoretically possible but people actually want to use it

Task-number: QTCREATORBUG-3813

Merge-request: 254
Reviewed-by: Kai Koehne <kai.koehne@nokia.com>