Many improvements to the givekarma controller, including making a start on language files.
Fixed uninitialized variable $phpbb_root_path.
Added git attributes to prevent testing files from being exported.
Added a comment in .gitattributes to cover a documentation error pitfall.
Indentation fix.
Started on a model and fixed a variable name.
Moved the model to the includes folder, as suggested by Marc.
Adapted the unit testing code to work for the store_karma function of the karma model. Still need to get full coverage and expect exceptions.