Removed call from qubes_installation scripts for proxy files. will now be added by sub-template
Renamed extra-whonix-files to files
Modifies functions.sh to allow for very short proxy names and custom directories that will be dist independent
Added ability to specify more than one TEMPLATE_FLAVOR (Primary plus others)
Added ability for all TEMPLATE_FLAVORS and others to be able to hook into scripts (pre / post)
Addeed tests for above functionality
With these changes TEMPLATE_FLAVORS can be self contained and not polute code space