Menu updates for easier flow, Fix up 2.3 compatibility
Fix menu flow, Add explanations, Fix menu option values

This places paths inside settings instead of the reverse for devices
that cannot view the slider menu. The configuration options have been
expanded to work toward adding all emu.cfg values as visual. Options
not currently being used by the emulator are commented to avoid user
confusion.

Set all icons to default to browser, Replace duplicate icon

Organize imports and move config to main menu for < 2.3

Fix fragment display in pre 2.3 devices by restoring views
Fix directory selection when BIOS is in an alternate folder

This will allow selecting a different folder on the first run instead
of having to place everything in /sdcard/dc first and then pick a new
folder to later move to. This will still notify the user of
requirements for having the BIOS in the /dc folder if they do not pick
an alternate location at this time.
Use xbox configuration for nVidia Shield to enable dpad
Fix missing navdrawer when returning to menu from game
Fi some strings, move bios checking