Fixed Issues/Bugs

#12318 Performance: Audit History performance improved.
#12222 Performance: Help Panel performance improved (browser memory utilization).
#12276 Exception when adding new Requester to Request.
#12362 Can not edit custom filed if number of custom fields is 15.
#12366 Whoops screen when trying to view release/change log.
#12316 URL custom fields stop working in 2.12 (for some complex URLs).