GitLab

Now the table for the user search form/language selector is gone. Other
HTML has been cleaned up too.

The magic of the CSS means that the main content column is always first.
No tables in sight!

Sets defaults for other themes.

Reads in themeconfig.php for all themes. Allows the theme objects to set
their own fields if necessary.

The root theme is now 'raw', and this cannot be changed. All themes
extend from the raw theme.

A bunch of fields were added to do with the widths and colours of the
columns. Now, it's technically possible for a Mahara site to have
sideblocks on the left, or sideblocks on both sides, and the widths of
these columns can be set in pixels or percent.

Also make sure that form never steals focus, and remove a dead line.

It's broken because it corresponds to the theme of the site, rather than
the theme the user is looking at the site with. I don't think this ever
resulted in any broken images however.

Most annoying on public pages where the login box is shown. When it gets
the focus it scrolls the document there which is annoying when you were
reading something below the fold, like a forum post.

This matches langconfig.php for the language files.

(cherry picked from commit 175bac4b)