Reviewed-by: Erik Verbruggen

Encapsulate the details.

the new approach makes it possible to use more edit features
inside the rename selection like cut/copy/paste. Furthermore
it compresses rename operations better on the undo stack.

Don't show the warning message (about the dangerous world of code refactoring) if the user pressed the "Yes, I know I am doing" button.

It was not working for files opened while indexing the project.

This reverts commit 6b510cb4.

CPPEditor::isInComment() returns if the text cursor is in a comment.

For implementing mouse navigation in the QML editor.

So they can be adapted in the color schemes.

Done with Thorbjørn Lindeijer