doc

Reload the configuration before setting a new plan (this prevents ove…

…rwriting of changes made by the user when the user has forgotten to apply the new configuration).

2020-05-26_with_interval: This version contains the "update_interval_…

…sec" (which has negative impact on battery life but works in combination with Armoury Crate)

doc & renamed "update_interval_sec" to "refresh_interval_sec" (which …

…is now optional). Removed "update_interval_sec" from default config.