VE-1335 Adding UI elements for media preview for VE. Using video's team's code to confirm auto play status
VE-1335 Adding methods to select media items in the media dialog
VE-1335 Refactor the list items to initialize only when being used. Avoids problems when returning VisualEditorPageObject from media preview
VE-1355 Adding test for previewing media
VE-1335 Adding logging
VE-1335 Adding method to verify image in preview mode
VE-1335 Adding test to preview image
VE-1335 Fixing desc for the test
VE-1335 Adding logging for video preview
Merge pull request #244 from Wikia/VE-1335

VE-1335 Test for preview video and image from VE