Python module updates and tox fixes

Making a transition to stable and updating links and other metadata,
stop manually generating CHANGES and rely on pbr's automatically
generated Changelog file. Update servermon for the above
Merge util.py in make_updates.py

util.py only had 2 functions directly related to the make_updates django
management command. Remove the first one, being a one liner and merge
the second one in make_updates.py
epydoc changes

Fix excludes
Fail on error
Stop introspection
Indent keyvalue doc string

epydoc whines otherwise about lists needing to be indented
Fix bug in make_updates.py

During the transition in 4f8c792 the gen_host_updates was not update
correctly. Make it a method and call it as we should
Add coverage tox env, do not run flake8 by default

Generate code coverage output during tests
Remove all occurences of servermon package in imports

Removing all of them in imports/documentation/settings etc. It was an
ugly workaround to avoid the problematic nature of django projects pre
1.4 and we can slowly now drop it
Merge pull request #73 from akosiaris/master

Remove all occurences of servermon package in imports
Make S/N search in jira plugin configurable

* search_string is now specified in settings.py
* closes #74
Merge pull request #75 from rowanthorpe/make-jira-search-term-configurable

Make S/N search in jira plugin configurable