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
Improve app-path setting in Apache wsgi file

* Use var for easy app-path configurability/reuse
* Only append app-path to sys.path if it isn't already there
Fix copyright notice in Apache wsgi file

* update copyright year
* s/ISC/THE AUTHOR/
Improvements to Apache wsgi file (esp. maintenance mode)

* switch to maintenance mode when Apache is reloaded and
  "_maint_mode == True" (in non-maintenance mode server reload/restart
  has an infinitesimally small added cost of one var-assignment and one
  if-branch, but actual requests have no extra overhead at all - the
  "application" function is unchanged in the commit)

* set _app_path and _maint_mode vars at top of code and label them for
  editing

* label _maint_file at top of maintenance-specific code for editing (if
  a custom page is being used)

* add commented-out (non-default) version of maintenance mode handling -
  to dynamically handle maintenance page changes without
  server-reloading (but doesn't use inotify/etc, because doing that
  portably without sourcing Django libs is too complex to be worth it) -
  for speed-reasons, it uses global vars instead of arg-passing