Result matrix view - tests vs browser

[stuartwakefield]

Improve the monitoring view to show a matrix of tests and passes / fails by browser, for example:

         +-----------+-----------+-----------+
         | browser_1 | browser_2 | browser_n |
+--------+-----------+-----------+-----------+
| test_1 | pass/fail | pass/fail | pass/fail |
+--------+-----------+-----------+-----------+
| test_2 | pass/fail | pass/fail | pass/fail |
+--------+-----------+-----------+-----------+
| test_n | pass/fail | pass/fail | pass/fail |
+--------+-----------+-----------+-----------+