Fix bug #173 - Unclear reporting of parameterised tests

See https://bugs.linaro.org/show_bug.cgi?id=173

  * Show test parameters (first 48 chars only) on the bundle details page.
  * Tooltip to show complete test parameters.
  * Add test_params to the exported CSV of a bundle.

Change-Id: I24a03d7be426e4f75d6ceee996cd226650a3f0d5
Show how long its been since the user joined in profile page.

Change-Id: If8b67d6f1bddf818f10079e5bcad075a7baa03b2
LAVA-1490: Add info level logs on job start on master.

Change-Id: I7fd56b734258153c3d036d0973274e454c8be734