routine update
updating url
limit custom firmware file size to 1 MB
routine update
disabling outline
extending range of RC rate to 0-2.5
removing obsolete code / cleaning up
get MISC implementation
MISC UI implementation for battery

fixes #15
implements throttle UI

#15
updating changelog
revert faulty equation
support for maxthrottle and mincommand
support for mag_declination and UI polish
extending backup support (MISC)
don't allow reading files bigger then 1MB
ui polish and bugfixes
callback based upload for restoring settings
mag declination handling changes
nicer arrows for input number