MoviePlayer: prevent resume dialog for live streaming

The player should not offer "resume playing" dialog for live
streaming when user navigates back to it.

(cherry picked from commit 3a16d7f019fc77c54ce38a137507ba5e5ac1ae8b)

Change-Id: I7fe6727ab884056a9135d1fa5ab21125570f70a3
CRs-Fixed: 637212
Gallery2: add mkv and divx mimetypes

- Add extra mimetypes so they can be used for streaming

Change-Id: I1df1b011ee54b646f23cfe3faa206c0aac41a838
CRs-Fixed: 620381