modified gitignore
Removing some intermediate values

This removes some intermediate steps that were ultimately not necessary
to the math.  It also consolidates some of the methods for counting events
so that fewer intermediate values are necessary.

To that end, a new scope is added to the ToDo model for events that are
*either* created_at or completed_at after a certain date. This scope
allows the StatsController to pull out the largest possible responsive
set of values, and then filter just the particular slices that it needs
for various steps in the calculation.
Removing some more intermediate values

Also removing the python-esque combination methods to set multiple
disparate variables from a single method by refactoring that to a
simpler method.

Reducing the complexity of computing running averages.

Note: It is not clear to me why the actions_done_lastyears_data
action is entirely unscoped on date. That seems to be the expected
behavior, so I left it alone.
Combining the running average methods
Removing a single-line method
Tweak to running averages
Simplufying interpolation method
Moving time labels to separate methods
Moving label creation to helpers
Fix setup for calendar controller test

Ensure that the expected todos are actually due in the same month
Move calendar test down to unit tests

Remove tests that are specific to the calendar model from controller
test and move them to unit tests.
first pass at csv import functionality for tracks
typos and style tweaks
made changes to MAX_DESCRIPTION_LENGTH everywhere
Pull apart the LoginController#login action

Begin pulling apart the different paths through the login action to
better understand how the action responds given different state.
i18n changes
Update db/schema with new syntax
Update the version specifier for timecop
update gems