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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

Pinning is now indicated by a different icon and you can press the
modified button to unpin the toolbar. This way pinning is way more
discoverable and easier to understand.

Also, update the gray mask that appears when user enters context of some
item. The mask is grown if the item changes its geometry, but never
shrunk, as this would introduce annoying flicker on the screen.

It gets a little too colorful.

In the default style this is currently the same, but in general it makes
more sense to highlight properties as fields.

It's missing some highlights that we currently don't support, but it
comes very close.

Switchen from QMAKE_BUNDLE_DATA to QMAKE_EXTRA_TARGETS, like we
already do on Windows and Linux.
QMAKE_BUNDLE_DATA does not seem to create make targets. We need
to copy-if-changed the files into the resources folder on each run.

Also pushed the Resources/ folder one level deeper, into Contents/.