Quick Fix - Task Editing Cancel

Temp fix for #1599

Hides the edit button on task editing.
Shows new cancel button on task editing.
Hides task notes on task editing.

Notes:
Still needs a save button up top, ```save(task)``` didn't seem to be working with ng-click (also tried a couple other things.) Will revisit.
'ng-if's could also work instead of 'ng-hide's.
Decided that we don't really need to have the task notes popover display while editing tasks since that stuff is already in the task editing pane.
authCtrl tests now working, replaced window for $window
add tests for userServices, changed alert to $window.alert in userServices
Merge pull request #1609 from Shaners/patch-1

Quick Fix - Task Editing Cancel
Merge pull request #1591 from djuretic/develop

Tests for AuthCtrl