Add Instagram support for now.

And no, it doesn't allow you to download videos from it.

Some important notes:
Instagram changes its code faster than most sites, may break my current code kinda easily.
"Tags" button on videos leave a paint trail from the initial position it was placed. I had to move it a bit so it wouldn't overlap with the now active video controls.

Fix - Removes 9gag.com videos overlays -> sound button, video duration.