unit support for variables
allow to provide variables with units
infer unit for VariableDevices with numeric variables
added updateConfig api and print error on server listen to logger
Update config api function, if a password is provided password fields are not blanked
check config in updateConfig
Fix for error handling
Device name check bug fix
added human-format for "formatValue" function
Merge remote-tracking branch 'icesory/master' into development
reservedWords cleanup
decl-api update