Updated bugtracker links
Contribution guidelines, new bugtracker links
FIX Saving of custom meta tags (fixes #8288)

This should allow custom meta tags to be saved in the admin panel.

Also, if you use html5 video or audio the source sub tag
would have been stripped two these are all the tags that may be empty
and are valid.
Merge remote-tracking branch 'sapphire/3.0' into 3.0