Allow both text and media to be shared to the post editor at the same time. Previously we were only accepting text OR media. Why not both? Fixes #180.
Check for image and video type before processing a single attachment, as it could be a different type of stream like text.
Merge pull request #539 from wordpress-mobile/issue/180-share-text-and-media-fix

Allow both text and media to be shared to the post editor at the same time.