Details:
The fade-in is a lot faster now, to
prevent things from feeling unresponsive.

Due to multiplying by a factor, it failed to really make any difference.

Done with mae.

This commit makes the uglyness of our current default arrow
icons visible. The toolbuttons are also too wide.

Based on a window-modal input dialog, so that it appears as a sheet on
the Mac.

Reviewed-by: Norwegian Rock Cat

With the new representation it fits fine, and this is a bit more
convenient for the user.

Conflicts:

	share/qtcreator/gdbmacros/gdbmacros.cpp

Added test for QObjectSignal dumper and fixed two bugs uncovered by it.

Hides the gory details, and in most cases the user doesn't care anyway.

This is a fix for the problem, that some users were unable to figure
out how to open projects.

RevBy:    dt

It may be that a non-default Qt version provides documentation even if
the default one does not.

Fixes: 257970

Reviewed-By: TrustMe

Reviewed-By: TrustMe

Details: Also fixed a minor bug that caused both the Submit and Cancel
buttons to not disappear after the user clicked Submit.

This is to make some room for embedding the color scheme editing back in
the options dialog.

Also, the background color of the list now gets synchronized with the
text background color. This is to make the bottom of the list look
nicer.