SUP-2910, Misc. onboarding (Skill picker) issues

-- Fixed - The "Done" button should not activate if only the iOS community is selected. The user must also select a track. (The iOS community is additional to the tracks; it's not a track itself)

Author: vikasrohit

app/skill-picker/skill-picker.controller.js

@@ -22,6 +22,7 @@
     vm.loadingCommunities = false;
     vm.communities = {};
     vm.isPageDirty = isPageDirty;
+    vm.isTracksDirty = isTracksDirty;
     ///////
     activate();
 

app/skill-picker/skill-picker.jade

@@ -70,4 +70,4 @@
     type="button",
     tc-busy-button, tc-busy-when="vm.saving",
     ng-click="vm.submitSkills()",
-    ng-disabled="vm.disableDoneButton || !vm.isPageDirty()") Done
+    ng-disabled="vm.disableDoneButton || !vm.isTracksDirty()") Done