Insertion of video on pages without any content fails

[SergioEstevao]

Expected behaviour:

• On a brand new post or one without any content.
• Click to insert media and select a video
• A video thumbnail should be show while the upload/progress is happening
• A video should be show on the end.

Actual behaviour:

-Nothing is show after selecting the video

How to Test:

• On the simulator you can drag and drop a video to the simulator to have a video in the Camera Roll
• The do the steps described on the Expected behaviour.
• Check also behaviour on post with content, by adding in the start, middle and end of the post.