update packages to latest versions
move requirements to a folder and update to Django 1.7

Additionally remove django-cms which makes migrations fail with Django1.7
configure email backend for local development
create users app

* move SystersUser model
* register to admin panel
* add initial migration
disable doctests options temporarily
add SystersUser tests
exclude migrations from flake8 linter and fix a warning
create community app with Community model
create blog app and common Post model
add CommunityPage model
remove dashboard app
remove obsolete settings and urls
add and configure django-ckeditor for wysiwyg
ignore media files
close #23 - add to README on how to generate docs
migrations for RichTextField
Comment model in common app
add JoinRequest model
add custom permission to Community model
list community permissions and groups