adds intent to get audio/image/video/files on longClick send file action

+prototype message with picture/audio …
+icons for play/pause audio

![pr](https://f.cloud.github.com/assets/1239177/2416826/5c8e0d24-ab0d-11e3-814e-678724c593f9.png)

of course only one of those would be shown in a message, and they'll be gone if neither an audio file or a picture were being shared, currently their visibility in the xml file is gone.