Alternative way to play a gif added via a GifWebView that extends
Webview.  A more simplistic and reliable way if targeting users mainly
using devices with Android 2.2+.
If we want to support more users and with older phones, use the movie
way.

Signed-off-by: Morgan Dock <morgan.dock@gmail.com>
Explanations about GifWebView commented in.

Signed-off-by: Morgan Dock <morgan.dock@gmail.com>