refactoring to make it graphite 0.9.11 compatible
add dynamic storage schema and db configuration

Now it is possible to configure multiple storage schemas via class
parameters. Furthermore you can configure the db backend via parameters.
remove wrong template path . close #11
RPM name in EPEL for django is Django14. close #12
fix warning with escape characters in gr_storage_schemas. close #13
resolve dependency issue with apache user. close #14
add missing dependencies which got lost at refactoring
update graphite version to 0.9.12
Merge remote-tracking branch 'dwerder/master'

It updates graphite to 0.9.12

Conflicts:
	README.md
	manifests/init.pp
	templates/opt/graphite/conf/storage-schemas.conf.erb
	templates/opt/graphite/webapp/graphite/local_settings.py.erb