create globals object that holds ariaRegion, instruction texts for components and accessability. change button texts to be objects with buttonText and ariaLabels.
use the globals object.
cleanup setupButtonSettings method.
Adds event trigger when no items found in drawer
Merge pull request #462 from thomaseitler/develop

Add a globals object and move accessibility around.
added attributes to globals. fix related functions.
Deleted attributes in the course.json which are not needed any more
Merge pull request #471 from lc-petranussdorfer/globals

added attributes to globals. fix related functions.
Merge pull request #465 from adaptlearning/feature/drawer-noItemsEvent

Adds event trigger when no items found in drawer
Testing dependencies removed completely

Removed test suites
- Karma
- Mocha
- Nightwatch
removed test script from package.json
Merge pull request #474 from hrajotia/testing-dependencies-removed

Testing dependencies removed completely