Release 6.22.1: Added new MIME types

[Guest]

The following MIME types and file extensions are added to /opt/open-xchange/etc/mime.types:

application/font-woff woff
text/cache-manifest appcache
text/javascript js

To avoid ambiguities, the file extension 'js' is removed from the following MIME types:

application/javascript
application/x-javascript

Side effects: auto-detection of e-mail attachments with above MIME types will use the updated assignments.