RO with 12 existing ROs

[rootabeta]

Attempting to RO when the region already has 12 ROs may result in a failure to successfully appoint oneself.
This can be circumvented by changing line 286 in content.js from
if(encounteredSelf) {
to
if(encounteredSelf || other_ros.length == 12) {
This allows YAFFeather to dismiss an RO if it has not found itself, but there are 12 ROs, meaning one must be dismissed before appointing.

This allows YAFFeather to catch failed RO attempts due to no available RO slots.

[rootabeta]

Merged to beta in 8b89379, awaiting field tests