Add a "Real-time values" checkbox to ShowBattery app. If checked, then the cache will be clear on
every cycle.
Bugfix: Use `mpos.time.localtime()` to get the "correct" local time with timezone offset.
Changes for Odroid-GO:
The seen "2400" values are at startup the Odroid-GO... After a while the values are somewhere
between 270 and 310... The full range is unknown, yet. But with the new calculation it looks more
realistic, then before ;)
Jens DiemerandGitHub
Pavel Machek
Thomas Farstrike