UI: debug stream output order broken

[shulter]

After some time and some events, new debug stream messages are appended in the middle of the list.

E.g.

1378327205 "(45) delta to server: 1378326761207, dev: 2175"
1378327206 "(45) delta to server: 1378326762126, dev: 919"
1378327209 "(45) delta to server: 1378326765207, dev: 3081"
1378325065 "Connected event 2/74 with rider 122"
1378325018 "Run time of 10000ms for rider 20"
1378325018 "Connected event 1/71 with rider 20"
1378325017 "Connected event 1/72 with

(pay attention to the svr timestamp)

[l3kn]

Might be some kind of race-condition fuckup. I will not be able to fix this in the current RC.

[shulter]

Okay, labeled it for RC2.