! Allow for index.php?action=calendar;event=1 or similar to go to the right page of the calendar and highlight the calendar item in question (currently in bold) to indicate what's going on. This will be used by the alerts system.

Signed-off-by: Peter Spicer <sleeping@myperch.org>
! Don't use $scripturl directly in alerts. For emails it's fine because they are less likely to linger, but for alerts they can hang around a while, e.g. if a user doesn't log in before a site move, and the user then logs in. Emails are by nature a bit more transient like that.

Signed-off-by: Peter Spicer <sleeping@myperch.org>
! Stupid bad copy/pasta from non MySQL installer to MySQL installer. Fixes #1235

Signed-off-by: Peter Spicer <sleeping@myperch.org>