created new class MaintenanceGateway

removed unused code from MaintenanceControl
3 jobs for Feature/PT-cleanOutMaintenance in 15 minutes and 55 seconds (queued for 41 seconds)
Status Job ID Name Coverage
  Build
passed #188447327
shared
build:backend

00:01:48

passed #188447326
shared
build:frontend

00:02:38

 
  Test
passed #188447328
non-shared
test

00:12:17