T311358

Added {{Extracted from}} template in the derivative

Bug: T247602

Added code to detect touch inputs on resizer div

Added code to detect touch inputs on the resizer div. Also, added
relative heights and widths to the resizer, so that it stays
within the boundaries of the video in mobile.

Bug: T245341
Change-Id: I5ab9f9cbbb0e936e093ab571e6312d210e019604

Merge "Add function to handle file name given as url"