Reviewed-by: ck

 * Pass the correct task to the taskhandler when a task is selected
   in a filtered list of the taskwindow.

Task-number: QTCREATORBUG-1950

 * Add a way to have a null-task which is invalid for evaluation

 * Fix off-by-one error when showing compile output of a task

While editing BorderImage margins I do not allow
negative margins anymore.

The label shows the zoom factor and there is also a
slider now.

A tooltip is now shown while editing BorderImage
margins.

Instead of the "Disable permanently" action, I added
a checkable action "Show depending on context".

If the Quick Toolbar is forced by a shortcut it can
be enabled now.

The "data" property actually might be a binding. At least
the QmlEngine accepts this case. We do nit resolve such
bindings at the moment, but we do not assert anymore.

Reviewed-by: Marco Bubke

The parameter force now forces the activation of the Quick
ToolBar even if it is not shown by default (enabled).

This shortcut forces the Qt Quick Helper to be shown if
available. The action is also registered in the context menu
so it is discoverable.


Reviewed-by: Christian Kamm

Makes development easier (no recompiling needed when tweaking the
templates). Also, all other templates are in that folder.

If an object is created at the same location of another old object,
It could be matched.

 * Handle moc warnings there
 * Add unit tests
 * Use new parser in Qt's makestep

Task-number: QTCREATORBUG-1908

Reviewed-by: kh1

Task-number: QTCREATORBUG-1896

Reviewed-by: ck

Reviewed-by: kh1

Done with: Thorbjørn Lindeijer

As in 479bcbd5

There should be no need for the text editor to request an update of the
completion box, since when it's there it will have focus and update
itself.

Reviewed-by: Roberto Raggi