Speed improvements (switch to jQuery 2+use a cdn), big warning if IE <9.

(it might explain to the user why it doesn't work at all)
Style hotfix
Timetable can count if it's opened on a weekend.
Fix countdown counting badly, make slideouts show info for monday if it's a weekend.
Merge branch 'master' of https://github.com/sbhs-forkbombers/sbhs-timetable

Conflicts:
	belltimes.js.php
Merge branch 'master' of https://github.com/sbhs-forkbombers/sbhs-timetable
Merge branch 'master' of https://github.com/sbhs-forkbombers/sbhs-timetable
Merge branch 'master' of https://github.com/sbhs-forkbombers/sbhs-timetable