#47 implemented Adding of new repo_groups+forms+validators. Fixed sorting of repo groups by main names in multiple locations. Removed some unneeded calls to self.sa for exchange to .query() methods. Added new db unique key for Group

syntax: glob
*.pyc
*.swp

syntax: regexp
^build
^docs/build/
^docs/_build/
^data$
^\.settings$
^\.project$
^\.pydevproject$
^rhodecode\.db$
^test\.db$
^repositories\.config$
^RhodeCode\.egg-info$