fixed some bugs for main page
adjust settings pages
.
merge vedio and image to one gallery
add share function
Merge branch 'video' of https://github.com/ydhl/HexNanoController_Android into video
the function of delete file
play video function,replace photo,delete file and thumbnail
Merge pull request #11 from ydhl/video

1. change UI of HUD
2. change UI of settings
3. add media album