Highlight total error result

instead of failing ones
Fix renderMs filter to round ms values
Add test for renderPermutation
Adding comment to genToggle directive
Rename genToggle to genSwitchTab
Fix edit problem form having 2 selected tabs
Add missing ace service
Allow to set the problem to be edited via the url

The new route is "/editproblem/:problemId:"
Merge pull request #38 from dinoboff/edit-problem

Fix some  minor bug, add tests and add a new route to edit a specific problem