faf-bugzilla-create-bugs: fix problem URL
bugzilla: don't use cookiefile
faf-bugzilla-create-bugs: fix help wording
bugzilla: use only configuration values
faf-bugzilla-pull-bugs: use identical logging level
storage: add backrefs to Rhbz classes
storage: add __str__ methods to Rhbz classes
config: add support for loading plugins config
set DJANGO_SETTINGS_MODULE automatically in pyfaf init
storage: add __str__ method to Package class
faf-save-reports: fix to use new bugzilla interface
move most of the faf-create-problems code to cluster.py
introduce pyfaf.template
tests: add clustering (create problems) test
bugzilla: save_bug should return updated bug
bugzilla: reworked faf-bugzilla-create-bugs

- Most of the code moved to bugzilla.py
- Now using python-bugzilla directly with pyfaf.template
bugzilla: add set_whiteboard
bugzilla: add missing whitespace to log message
config: add ServerURL and ServerEmail variables
tests: move faftests to utils