Merge pull request #102 from nikolas/logged-in-test-mixin

Introduce LoggedInTestMixin
Merge branch 'master' of github.com:ccnmtl/dmt
Merge branch 'master' of https://github.com/ccnmtl/dmt
Merge branch 'master' of https://github.com/ccnmtl/dmt
restore default column arrangement for dashboard

The ability to configure your dashboard is interesting, but the existing
set of columns and their ordering was carefully curated over the years
to show a good summary for most users without overwhelming.
Merge pull request #117 from thraxil/restore-dashboard-default-cols

Restore dashboard default cols