QmlDesigner.PropertyEditor: Adjust size of TabView

The size of a TabView does not adjust to its contents.
We have to do this manually.
The minimum size is defined by the LayoutSection.

Task-number: QTCREATORBUG-12040
Change-Id: Icdf42cbc3788b3ce38b9cffdb0dc9afd15d32815
Reviewed-by: Marco Bubke <marco.bubke@digia.com>
QmlDesigner.PropertyEditor: Adding tooltip to ButtonRowButton

Change-Id: Ia5117b9831d8ccf8c01774a247bc3c68642bc8e4
Reviewed-by: Marco Bubke <marco.bubke@digia.com>
QmlDesigner.PropertyEditor: Hide TextInput specifics properties for TextEdit

Task-number: QTCREATORBUG-12035
Change-Id: I39fef53ce9203a58ba3ce2a0e09e8b4d69a14fa7
Reviewed-by: Marco Bubke <marco.bubke@digia.com>