Added zone classifier.
Finished classification of HR zones.
Multitude of fixes + serializing zones as just a series of numbers.
Updating Bootstrap to 3.0.3 + minor presentation tweaks.

-) Hiding List/Calendar buttons, as calendar not implemented yet anyway.
-) Fixing workout height to avoid it changing when switching gauges/numbers/both.
-) Changing order from year/month/week to week/month/year
Creating single UNKNOWN Hr zone, even if no HR data series present.
Update to Angular 1.2.5
Properly positioning entries in sport summaries section.
Computing pace zones for running.
Some fixes + displaying pace gauges.
Not showing decimal places for distance over 10.0 kilometers/miles.