No "is online" messages

Most of the time Spark is showing “Contact went offline” messages only. Only some times it shows “is online” message in chat window. Most of the time only presence bubble becomes green. Actually in that rare cases when “is online” shows up, presence bubble stays gray. Should it show “is online” every time when contact comes online? I think so.

A long standing issue fixed. Applied suggested code by Alexey.

[SPARK-1512] *** is online at message does not always show in chat room - Jive Software Open Source