Update rendered users array so we don't pollute new folks
rendering with other users.

Stash what tab a user was in in a "sticky" associative array.
Make tab users are on "sticky", while taking attendance.
If there is post data indicating what tab users are on,
use that instead of SQL query to decide which tab to put
users on.
Update version info.
Add optional param to handle user() call
Merge pull request #10 from OpenAirOrchestra/sticky_tab_type

Make tab type (recent, remainig) "sticky" during attendance taking