Making the registration templates translatable and updating the Dutch
translations. Please note that makemessages needs a new argument to get
this working correctly:

../bin/manage.py makemessages -a -e ".html" -e ".txt"
Pin the version of django-debug-toolbar
Fixing newlines in Dutch translation
Fixing the links to the login page on the registration templates.
Updating Dutch translation to previous commit.
Updating the readme with info on translations and bootstrap.py.
Merge branch 'master' into testing