Update to use LESS v1.4.1
Add weekly by person.

Add functionality to show statuses grouped by week and by
person for at-a-glance weekly progress reviews.

Add 'weekly' support to the json v2 API too.
Addd @<username> syntax for status formatting.
Add a 'week' parameter to limit to a specific week
Update requirements

This updates all the requirements to latest versions.
Fix migration 5

Migration 5 doesn't work because it's missing definitions for Team and
User. I'm not sure if it worked before. It's possible it stopped working
with all the updates. I didn't spend much time looking into it.
Merge pull request #158 from willkg/update-requirements

Update requirements
Fix the `week` behavour to match api2
Give the WeekColumnClause funcs unique names.

This makes it much easier to test them individually.
Add test coverage for the week-related code.
Merge branch 'fix_test_coverage' into filter-by-week2
Fix test issues with username formatting pr
Merge pull request #159 from willkg/155-test-fix

155 test fix
Merge pull request #156 from mreid-moz/filter-by-week2

Add a 'week' parameter to limit to a specific week
Update Buildfile