Activity notes prep
Fixed indenting mishap in ST
Endomondo interactive upload, no proper handling for missing extauth though. Also, fixed some stats in Endomondo.
Misc fixes for GC, RK
Sync works again (sort of?)
Switchover to a nested Lap collection, with each Lap having its own set of ActivityStatistics. Who knows if it'll even start!?
Fix syntax errors, GC notes upload, per-lap stats for FIT, speed attribute for waypoints