categoryKuser deleted event addition

SUP-2132 #time 1d
raising event for deleting pending as well + template creation fix

SUP-2132 #time 15m
migration & partner 0 template-fix scripts

SUP-2132 #time 0.5h
identataion fix
comments editing
different location for XML script
release notes addition
Merge pull request #1744 from kaltura/IX-9.19.5-SUP-2132

Ix 9.19.5 sup 2132