Add options for main api.okhub.org html directory
Updates to main site html
update favicon
Update base template and CSS
Correct bugs in account activation templates

- If we get to activation_complete.html then we have succeeded, no check required
- the user isn't available in the activation_email
- Add titles
Updates to registration templates

Improved text, extra titles etc.  Added by Peter Mason.
Merge remote-tracking branch 'production_new/master'