Added language files for IMAP and XMLRPC plugins, that contain language strings required for auth plugins.

Ran the copyright notice corrector script so all Mahara related files are correctly licensed under the GPL3.

A minor whitespace fix also.

fixes bug #1915 where if a user has more than one email set it thinks there are none set at all

fixes bug where group relationships aren't detected properly

A bit of a hack - see the comment in the diff.

Allow attempts to register through even if the user is logged in (log them out then continue the attempt). This makes for more graceful handling if someone register and account and tries to activate it in the same browser where they're logged in as someone else.

 * Give authentication plugins titles and descriptions, which are used by the authlist pieform element so people see an easier name
 * Add a new API method to the PluginAuth class, is_usable(). This can be used by auth plugins to check that required extensions are available. The authlist element will tell the user what they need to do to enable a plugin.

Made the contact form redirect to the homepage after submission. This means turning off jsform for it.

Don't refer to the direction of the captcha image because it's used on the contact page where the image is above the description.

Fixes to the upgrade process so that it works in MySQL, and produces roughly the same database compared with if it's installed from 1.0.

changing ldap to work when only email is set

changing use of str_shorten to it truncates introduction/descriptions rather than cutting out the middle

Fixes to the upgrade so that an upgrade from a pristine 0.9 postgres to 1.0 produces the same schema as installing from 1.0.

Open contact information fieldset on edit profile page when coming from resume contact information section