Fix bug in FollowerMailerService to keep from sending mail if no split_times are reported.
Fix bug in FollowerMailerService to keep from sending mail if no split_times are reported.

voltagead/OpenSplitTime,voltagead/OpenSplitTime,SplitTime/OpenSplitTime,SplitTime/OpenSplitTime,voltagead/OpenSplitTime,SplitTime/OpenSplitTime