Keep replay-specific data in ReplaySession object
Add indirection liveTagInfo to ServerState
Move ServerState.status.readerServerTime to liveTagInfo.mostRecentEventTime
Rename html id reader-time-label ~> tag-event-time-label
Rename TagInfo ~> TagsInfo + Add tagInfo to ReplaySession
Update antenna coordinates according to '140903 RFID antenne plaatsing.pdf'