[Fix bug 917727][Fix bug 916011] Migrate remo to django static files

* Fix hardcoded dependencies that referenced MEDIA_URL
* Change dir structure to <app-name>/statics/<app-name>/
* Use {% static %} template tag for static urls
* Server "robots.txt" using a view
* Use single jQuery source in bundles before minification
* Ignore /static folder
* Delete unused files and /media folder
* Remove jingo-minify settings and use django-compressor
* Migrate all jingo-minify css() and js() references
* Add .gitkeep to /media folder for future media use
* Store deployment revision informations to /static
* Add BeautifulSoup to requirements
* Fix update.py not to use compress_assets
[bug 904859] Remove links from day box.
Merge pull request #494 from johngian/django-static-migration

Use django static files instead of /media
Merge pull request #512 from glogiotatidis/904859

[bug 904859] Remove links from day box.
Include requirements/prod.txt in requirements/dev.txt.
[Fix bug 912431] Add fixture creation instructions to docs