CE/dashboard

* created odometer class to track run stats
* created time interval formatter as there appears to be a bug in the standard formatter
* created distance formatter to avoid displaying "feet" for short distances and to allow the option of not showing units appended to the end of the string
* created pace formatter with optional units displayed 
* connected run stats to dashboard using new formatters
* connected progress bar
* updated default values in storyboard
The locale should be a publicly settable property on a formatter; _i.e._ it is a dependency that should be injected.

The reason is that we will want to let the user override their system's preference for metric vs us. Most, if not all formatters default to using the current system locale, but can have their locale overridden.

We should keep them somewhat consistent with other formatters' practices.