Get the reinstaller working again

Finally had the time to get this back up and running. This reinstaller
does NOT do anything with the GitHub repositories; it merely clones
whatever is there. We should have instructions somewhere for how to
delete and re-fork the repositories if someone wants a full reinstall
from scratch.

Later on I'll do the promised OAuth linkage to allow people to do this
from the Dreamhack server by running another command, but for now this
will do.
Reduce compare time from 120s to 115s

Having this value exactly at 120s cometimes causes the cron job to pass
the request over, depending on when it's fired. Changing this to 115
should prevent this.
Make this error a bit more user-friendly.

This error should never actually happen, but in case it does it does need to be
a bit more user-friendly. Make sure people know that their account hasn't been
changed and that it didn't try to do the reinstall yet.
Merge pull request #25 from Sophira/get-reinstaller-working

Get the reinstaller working again