BUG STORM-1004 FIXED Unblocking/blocking name sometimes deletes identically...

BUG STORM-1004 FIXED Unblocking/blocking name sometimes deletes identically named entry, but of different TYPE

LLMuteList stores muted objects in two sets: set of names and set of ids. Avatar objects are stored by ids (set of ids), other objects can be stored both by name(set of names) or ids

- Delete items from corresponding set (from set of names or ids), not form both sets at time.

- Improved isMuted method's logic. Now if avatar is tested whether it's muted or not, don't search its name in the set of names.