VE-303: Add Media button
updating authors
Adding the empty dialog
merging VE branch
Stripping whitespace to pass jshint
fixing merge goof
removing raster icon and assets. updating vector icon
final, crisp version of the media icon
fixes from code review
somewhere, a Douglas Crockford died
Fixes after code review
Merge pull request #1517 from Wikia/add-media

VE-105: Add media button and dialog