It didn't make sure its Function* stayed valid. Now it does, by keeping
a copy of the list of CppDocuments (the snapshot) around.

(makes standard key bindings work)

Fixes: Make git diff work for staged files, do not launch submit if file list empty, make file  model read only, add conveniences

Details: Add a type data field to the git file model

Details:  Copy and paste error

Not entirely sure about the location of the menu entry. Also, the dialog
is in dire need of a redesign.

Details:  One step at a time.

Details:  - And do some simplification/consistency.

RevBy: Thorbjørn Lindeijer

Task:     CMake support
Details:  we don't pass those to the cbp file generation, that might create problems.

Details:  Forgot to add the factories, also the configuration options for the cmakestep don't work atm.

It still read "/qworkbench", the research project name for Qt Creator.

Reviewed-by: con