[Adds] syncallrunsandremind command.
[Adds] syncallrunsandremind command.

syncallrunsandremind is a manage.py command that causes all users
who have associated their accounts with runkeeper to have their accounts
updated with their most recent runs, and will send everyone else an
email reminding them to input their runs.
Socialsquare/RunningCause,Socialsquare/RunningCause,Socialsquare/RunningCause,Socialsquare/RunningCause