Duration only mode #131 (#134)

config/services.yaml

@@ -14,6 +14,7 @@ services:
                             # The best practice is to be explicit about your dependencies anyway.
         bind:
             $projectDirectory: "%kernel.project_dir%"
+            $durationOnly: "%kimai.timesheet.duration_only%"
 
     # makes classes in src/ available to be used as services
     # this creates a service per class whose id is the fully-qualified class name