adding proper underscore.js lib to the project
adding UI buttons with js hooks for backup/save
adding necessary permissions for fileSystem
adding save_restore file with initial save code
callback support in object_save function
working configuration restore in tx tab

(should add some sort of object validation before line 88
slave_mode flag support in RX tab
save/restore functionality for RX tab
save/restore now strictly verify fw version
bumping to v 0.9