[hobbit] New enable/disable tool ready for testing

[Thiesfeld, Gordon]

> My solution works somewhat differently than the old "maint.pl" script:
> The enable/disable functionality is no longer a separate webpage
> listing all hosts; instead, this function is moved to each hosts'
> "info" column page. I did this because I have about 2000 hosts, so the
> list of all hosts was practically unusable in my setup. You can see
> how it looks on the demo site http://www.hswn.dk/hobbit/ - just pick
> one of the "info" buttons.


The demo looks good. My concern is that we often disable all tests on up to
30 servers at a time to deploy code and reboot.  Having to do each box
individually would be a real chore.