Add form, view and site for adding ads to the site
Update ignore rules
Update config for flask-uploads and SQL_URI
Fix the category in AddAdForms so the list indices coerce to integers instead of str
Fix ad model
Add uploading functionality for the ads
Merge branch 'develop' of https://github.com/finnurtorfa/aflafrettir.com into develop

Conflicts:
	aflafrettir/forms.py
	aflafrettir/templates/admin/ads.html
	aflafrettir/templates/admin/settings.html
	aflafrettir/views.py