Add benchmark overview page to html report

The overview page shows all scenarios and their summarized results
in single table, so it is easier to understand the whole result
and compare specific scenarios.

Also, there are some minor features and fixes in html report.

Changes:
  * Benchmark overview page
  * Task input file is available now
  * Scenario full duration is added to overview
  * Scenario duration is renamed to `Load duration'
  * Overview is sortable
  * Fix: control from browser history: back/forward buttons now work
  * Fix: durations are reset for iterations with errors
  * AngularJS version is updated to release 1.3.3
  * task sla_check output: column `success' with options True/False
    is renamed to `status' with options PASS/FAIL

Change-Id: I0eb7af01432c9c10e4ec55720bb53417478a5789
Merge "Add benchmark overview page to html report"