fix(authoring): Add styles to current stage

SD-1052
fix(world-clock): use $interval and stop it on $scope.$destroy

fixes memory leak and make world-clock e2e testable

SD-1035
chore(bower): update deps

- angular 1.3.2
- moment-timezone 0.2.4
Merge pull request #530 from petrjasek/devel

fix(world-clock): use $interval and stop it on $scope.$destroy
feat(authoring): a button displays the stage current item is in.

SD-1052
Merge branch 'current-stage-fix' of https://github.com/nidzix/superdesk-client into authoring-current-stage
fix(authoring): Cleanup after styling changes.

SD-1052