Merge branch 'refactoring_async_dev' of https://github.com/ntruchsess/fhem_owx into refactoring_async_dev
add suitable loglevel
add OWX_forall_clients and centraly update PRESENT and ALARM in all client-modules
adding 21_OWSWITCH.pm
OWSWITCH first async refactoring
let OWSWITCH_GetState wait for async response
adding 21_OWAD.pm
add handling of PRESENT to OWX_AfterExecute
initial async refactoring of OWXAD
adding 21_OWMULTI.pm
async refactoring of 21_OWMULTI.pm
fix OWXAD_AfterGetPage access to readdata
fix OWXSWITCH_AfterGetState/AfterSetState access to readdata
fix some typos so OWSWITCH, OWMULTI and OWAD
fix getPage 'reading' in OWAD. First version that successfully executes async
Merge pull request #1 from ntruchsess/refactoring_async_dev

add OWSWITCH, OWID, OWMULTI and OWAD from Refactoring async dev