Don't flash a message about being logged out
Don't flash a message about being logged out

This feature is now just an annoyance because logging in as a DJ no
longer requires a DJSet; if the djset_id on the session is no longer
valid, we can just create a new one.

wuvt/wuvt-site,wuvt/wuvt-site,wuvt/wuvt-site,wuvt/wuvt-site