User Pictures, Videos and contacts support

Hi

I have added JSON and Database support for user's pictures, videos and contacts. This works along with iOS and Android application i have developed that allows users to upload their phone content into XBMC and view it through XBMC user interface.

I also have finished the first version of skin for photos, videos and contacts that I would add to github as soon as its complete.

I am new to XBMC codebase and using github for the first time for development. These check-ins are kind of bulk check-in however I will continue to work on break them into smaller commits.