P.O.C. of angular rendering sleeps
Added support for import vs. syncing of data in 
Data provider - and implemented on FitbitAccount
Merge pull request #22 from jdjkelly/feature/data_provider_init_strategy

Added support for import vs. syncing of data in
Improved unit support - splitting Unit.to into Unit.to_unit
and Unit.to_system, as well as standardizing on metric for db
units
Merge branch 'staging' into feature/angular_punt
Experiments with Foundation angular ui