Media-capture manual tests fails on Windows8/8.1/WP8.1 due to APi misalign

Capture manual tests fails on Windows 8/8.1/WP8.1 due to API misalign in CaptureProxy.
Details:
1. Capture methods captures files to user's profile folders, instead of local app’s folders so these files can't be accessed via src="" attribute.
2. Capture methods returns MediaFile objects without fullPath property.
3. Capture methods returns MediaFile objects with localURL field set to file's full path.

Proposed solution:
1. Return url with ms-appdata// for nativeURL/localURL property

@param nativeURL
    {DOMString} an alternate URL which can be used by native
    webview controls, for example media players.
    (optional, readonly)

2. fullPath – same as above but w/o msappdata://prefix or native Windows full path.

with these changes both of fullPath of localURL can be successfully resolved by File plugin after CB-7413 resolution (https://github.com/apache/cordova-plugin-file/pull/70)