Changing nothing, just preventing next patch to be scrambled by it.

Task:     240180
Details:  Hopefully fixes a few crashes people have reported.

Task:     Reported on irc.
Details:  I think this is nicer, while debugging, you probably need
those extra pixels for the other views. We need some flash on the
application button to make it more obvious that something was added to
it.

Now reuses the colors set for Type and Keyword for the variables and
functions respectively. Having the categories Variable and Function in
the fonts and color settings was confusing.

Reviewed-by: Roberto Raggi

It assumed qhelpgenerator was in the path, though this isn't necessarily
the case. Use the absolute directory instead.

key or not.

Added the ability to clone AST nodes. Please, note that this is not finished yet. So don't try to use it.