Task: 238143

Details: Also remove unused change number dialog.

RevBy:    - hjk

RevBy: Eike
Details: Remove leftover defines/includes

Instead of directly adding QToolButtons to the tool bar of the
navigation subwidget, use QActions. This allows the tool bar extension
to show them in a menu when necessary.

The icons are inappropriate for in a menu, however.

RevBy:    b_lindeijer
Details:
This resolves the problem with missing top-borders on
the find toolbar.

(cherry picked from commit e5c845fc)

We shouldn't append the name in cases where the text was not empty but
_name was.

Reviewed-by: Roberto

The helpId was working but the tooltip text was empty.

Reviewed-by: Roberto

Should be pretty safe to cast the apparently unsigned return value of
"sizeof" to a regular integer.

Looks a bit nicer now and the tooltips explain some of the options a bit
better. Header texts have also been simplified.

(cherry picked from commit ad5bdf69)

Details:  If we know don't parse some errors, then i'd like to know.

Task:     Reported on irc

    Details:  makes it compile now with Qt snapshots

Apparently these libraries are duplicated on Windows.

Reviewed-by: Danimo

It was taking the wrong length when constructing the new paths.

Reviewed-by: Danimo

Agreed with Nigel that Qt Creator shouldn't imply that it's not already
great in its feedback text. Changed "better" to "even better", new image
by Nigel.

Details:  - Happened in release builds when opening pro files with
CONFIG scopes and a non-valid Qt version set.

    Task:     180315
    RevBy:
    Details:

    Details:  also accept trailing slashes

Details:  That hasn't worked in the last few months, since we changed
the QtVersion class from being passed by value to being passed around by
reference.

editor.

Task:     -
RevBy:    -
AutoTest: -
Details:  -