Change-Id: I0f90086a8145be422bb9c68d4e3df00392e76433

We want to put other stuff in edx.analytics, so we move all of our batch job related logic in to a subpackage.

Change-Id: I5dc93e5e183e61e01c4dc910f391ddd39203d987
Fixes: AN-508

Add first pass at course enrollment calculation.

Also other refactoring based on PR feedback.

Omit days with no change in user status.  Add tests for reduce.  Rename time-related functions.

Include status and org_id in enrollment report

Enrollments CSV Report

fix remote task execution

* Fix an accidentally committed syntax error in task.yml
* Vastly improve the argument parsing situation, now you can just pass in all of the arguments as you would to launch-task, and remote-task will pass those through.

Remove namespace packages from installtion

Luigi cannot correctly package a task if they are inside a namespace
package.

run tasks using ansible

Add tasks to synchronize event log buckets