Initial changes for perobject stuff

CURA-1278

plugins/PerObjectSettingsTool/__init__.py

@@ -2,6 +2,8 @@
 # Uranium is released under the terms of the AGPLv3 or higher.
 
 from . import PerObjectSettingsTool
+from . import PerObjectSettingVisibilityHandler
+from PyQt5.QtQml import qmlRegisterType
 
 from UM.i18n import i18nCatalog
 i18n_catalog = i18nCatalog("cura")
@@ -25,4 +27,6 @@ def getMetaData():
     }
 
 def register(app):
+    qmlRegisterType(PerObjectSettingVisibilityHandler.PerObjectSettingVisibilityHandler, "Cura", 1, 0,
+                    "PerObjectSettingVisibilityHandler")
     return { "tool": PerObjectSettingsTool.PerObjectSettingsTool() }