Done-with: ckamm
Task-number: BAUHAUS-631

I introduced some graphical details in the background
that replaces the gradient. I also fixed the foreground
square a bit to get rid of the blurry line at the bottom.

Reviewed-by: danimo

because of a recent change, they were overlapping with qmljseditor, so
e.g. delete key did not work in text editor.

The Parentheses, TextBlockUserData and TextEditDocumentLayout classes
and their member function implementations were spread around the
BaseTextEditor class. Moving them to their own file to make the code a
bit better organized.

Reviewed-by: mae

Reviewed-by: con

If you're in Design mode, any new editors will open in design mode
as well. If you're in Edit mode, new editors will open in Edit mode.

Task-number: BAUHAUS-609

SideBar was patched to give it extra functionality:
 - closeWhenEmpty: when all sidebar widgets are closed, the whole
   sidebar will disappear, too.
 - unavailableItems: a list of non-openable windowTitles can be given
   to the sidebar.

Reviewed-by: con

Alt+0 does this now, the command is overridden.

Reviewed-by: kkoehne

'property var' isn't supported any more, it's now 'property variant'

Added library flag to CMakeBuildTarget struct which is set when parsing
the cbp file. This flag is then used to make sure no runconfiguration
is created for library targets.

Merge-request: 136
Reviewed-by: dt <qtc-committer@nokia.com>

Task-Nr: QTCREATORBUG-1151

Task-Nr: QTCREATORBUG-1176
Reviewed-By: danimo

Seems like nothing should be immutable.

Task-Nr: QTCREATORBUG-1161

It does not conceptually belong there, and several people have
asked for an interface to use the functionality in their own
plugins.

Task-number: QTCREATORBUG-1204
Reviewed-by: kh1

Fix breakage introduced by:
59237338

Reviewed-by: hjk

Do not listen on ICore::contextChanged to update actions
(became slow after additional contexts).
git: Make code to find top level faster, avoid
constructing file info lists.
Acked-by: con

Point user to settings if something goes wrong.

Point user to settings if something goes wrong.