Video (vid-1008, vid-1006): add video_id to video_info table
Video (vid-1008): add videoId to videoInfo class
Video (vid-1009): use master database in findVideoDuplicates() function
Video (vid-1009): add function to get duplicate videos from video_info table
Merge pull request #1990 from Wikia/vid-1009

VID-1009: add function to get duplicate videos from video_info table
Merge pull request #2012 from Wikia/vid-1005

VID-1005: add function to find duplicate videos for VE