Bug 1114722 - Only default to the talos tab for successful jobs

If the job failed, it's more useful to show the failure summary tab,
instead of defaulting to the new talos summary tab.
Merge pull request #310 from mozilla/talos-tab-default

Bug 1114722 - Only default to the talos tab for successful jobs
jshint syntax fixes (semicolons, ===, etc)
Bug 1114665 - Prevent focus on suggested bug buttons