Fix addresses not to being inserted into the textarea with line breaks

See merge request !30

Use the built in sucs-site error handling stuff.

See merge request !29

Conflicts:
	templates/susignup-admin.tpl

Send people to the maintained games.sucs.org instead of taking them to /games Closes #19

Change the top level menu link to send people to games.sucsorg instead of /games

See merge request !26

when the click on the menu link.

Implement the new SU API Closes #5

See merge request !25

Merge branch 'suapiv2' of projects.sucs.org:imranh/sucs-site into suapiv2

Also change the way messages are flashed to the user.