Reviewed-by: ck

Now the highlighter engine does not directly depend on TextEditor::FontSettings. This also makes things easier for unit testing.

Reviewed-by: ossi

Reviewed-by: ck

Since the highlighter doesn't run on the whole file, only on the changed
line, we need to store the information whether a block starts in a
multi-line comment.

Reviewed-by: Erik Verbruggen

Don't sort the global completion items when we have too many of them, instead
populate the completion box in a way where local symbols are showed before
global symbols.

Task-Nr: QTCREATORBUG-1411

When there was no existing configuration, it would get set to pure black
on startup, resulting in a very dark gray Qt Creator. Now it is back to
its old friendly gray as default color.

Also made sure that the default on startup and the color used for
resetting the UI color in the settings are always in sync.

Reviewed-by: Jens Bache-Wiig

Fix for QTCREATORBUG-1490

Reviewed-By: Friedemann Kleint

Reviewed-by: Oswald Buddenhagen

Quite a few people seem to prefer this and it is the default in Eclipse
and MSVC.

This applies to both C++ and QML completion.

Task-number: QTCREATORBUG-1474

Due to different text positioning logic between the QItemDelegate and
the way SearchResultTreeItemDelegate drew the line numbers, the line
numbers did not align properly to the line of text next to it.

This was fixed by relying on QItemDelegate::drawDisplay for drawing the
line numbers, so that the same positioning logic is used.

This exposed a small right-alignment bug in QTextLayout, for which a fix
is coming to Qt.

Done-with: Erik Verbruggen

Introduce TaskWindowPrivate, add and reformat some
comments.

This also makes the editor auto-fold the license comment.

Task-number: QTCREATORBUG-1455
Reviewed-by: Erik Verbruggen

Reviewed-by: Kai Koehne

Reviewed-by: Kai Koehne

Only insert necessary newlines

Reviewed-by: thorbjorn
Task-number: QTCREATORBUG-1476

Only insert necessary newlines

Reviewed-by: thorbjorn
Task-number: QTCREATORBUG-1476

This reverts commit 13a721d9.

This reverts commit bb35b4d0.