Initial work on v2
Don't force_insert

We're not really creating a new object here.
Easier editing in admin
Removes ambiguity from alerts
Properly handle list creation via API
Adds missing trailing slash
Clean-up value display and add bytes option
Adds missing template
Fixes typo
Use new display in template
Adds real value on hover
Adds seconds display option
Bulk editing admin interface
Don't bother with fieldsets

The detail pages aren't used.
Adds support for counters
 Adds ability to transform inbound metrics

Simple arithmetic can be applied to incoming metrics.
South required updating to fix a bug encountered with the
included migration. Variable substitution occurs on:

    x: the value of the metric
    s: the seconds since the last metric was received
Fixes broken test
Removes legacy code

Shuffles bits around to new modules that are still relevant
Removes `app` namespace
Clean-up to prep for distribution