Editor:
 * renamed OmnibarController to EditorController
 * renamed omnibarInputDirective to editorTitlebarTextInputDirective
 * added registration of opened and closed callbacks to DrawerService
 * removed saveUnsavedListAndLinkToItem function from ListsController - save unsaved list in EditorController
 * handle navigation and communication with DrawerService in MainController
 * register drawer callbacks from EditorController in MainController
 * initialize EditorController in editor.html instead of MainController
 * removed openOmnibarDrawer and closeOmnibarDrawer functions from featureContainerDirective
 * removed omnibar and footer ng-class from feature container element and added editor and menu ng-classes to main element
 * replaced 'omnibar' with 'editor' in app
 * added saveTask and resetTask to TasksController

 Reset task:
  * add 'description' to transient properties
  * addTransientProperties in TasksService gets array of tasks instead of single tasks as a parameter
  * detachTransientProperties in ExtendedItemService supports array of detachExtraPropertyFns

Refactoring.