fixed default permissions population during upgrades - it often happen that introducing new permission caused default permission to reset it's state to installation default. new version makes sure that only missing permissions are created while leaving old defaults

syntax: glob
*.pyc
*.swp
*.sqlite
*.tox
Paste*.egg

syntax: regexp
^rcextensions
^build
^docs/build/
^docs/_build/
^data$
^\.settings$
^\.project$
^\.pydevproject$
^\.coverage$
^rhodecode\.db$
^test\.db$
^RhodeCode\.egg-info$
^rc.*\.ini$
^fabfile.py
^\.rhodecode$