Fix broken link

- help icon on composer had a bad link

#454
Merge pull request #496 from strongloop/feature/broken-help-link

Fix broken link

fix #454
Refactor pid selector into a directive

- move pid selector code into its own directive
- exposes $scope.activeProcess to the parent controller

#490
Refactor pid selector into common namespace

- move pid selector CSS to menu.less
- move directive to Common ns

#490
Rename pid selector to use common namespace

#490
Break up menus.less

- move rules to ./menus/pid-selector.less

#490