Forward and back arrows mess with system state

[djtuttle]

Hitting the forward arrow after being removed from a group if you were just on the page allows the user to enter a group they are not a part of.

Hitting back after removing self from group displays the groups page without updating so the user still appears in the group. Refreshing fixes this but would still allow the the issue mentioned above.

This is likely because the forward and back arrows on the browser are affecting the state of our system and we have not accounted for it.

We can fix this if we have time but this is likely out of scope for our project.