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

Need to check the character to the right of the cursor.

Cause that's the relevant context.

Done with mae and Roberto Raggi.

Done with mae.

its only turned on in the cpp editor.

For implementing mouse navigation in the QML editor.

reorder .pri includes to ensure relevant -L flags appear before the -l
flags which need them

Makes context sensitive help work for valid expressions that happen to
be part of a marked diagnostic error. However, for now you still can't
get documentation for expressions that don't resolve.

Also, context sensitive help now also works for includes where possible.

(user request)

Reviewed-By: dt

Makes sure that all files recognized by the CppEditorFactory get the
proper icon.

Also synchronized suffixes to match what is in the xml file.

Details:
Added one new purple icon for .c files and registered
the same icon for .hpp extensions.

So they can be adapted in the color schemes.