New software structure on E5 Daisy player

As per partner's comment, we upgraded E5 software structure to latest version.

Main changes stated below:

1. Recording parameters setting moved to menu system

2. Voice reminder feature added

3. Rewind and fast forward control when play audio files

4.Talking calculator's working logic upgraded to make it much more accessible to users.

5. Better compatibility with EPUB-3 file format.