Only load plugins if PLUGINS_ENABLED is true

- Hide plugin settings
- Add plugin support status to "stats" dialog

InvenTree/plugin/apps.py

@@ -1,21 +1,32 @@
 # -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
+import logging
+
 from django.apps import AppConfig
+from django.conf import settings
+
 from maintenance_mode.core import set_maintenance_mode
 
 from plugin import plugin_registry
 
 
+logger = logging.getLogger('inventree')
+
+
 class PluginAppConfig(AppConfig):
     name = 'plugin'
 
     def ready(self):
-        if not plugin_registry.is_loading:
-            # this is the first startup
-            plugin_registry.collect_plugins()
-            plugin_registry.load_plugins()
 
-            # drop out of maintenance
-            # makes sure we did not have an error in reloading and maintenance is still active
-            set_maintenance_mode(False)
+        if settings.PLUGINS_ENABLED:
+            logger.info('Loading InvenTree plugins')
+
+            if not plugin_registry.is_loading:
+                # this is the first startup
+                plugin_registry.collect_plugins()
+                plugin_registry.load_plugins()
+
+                # drop out of maintenance
+                # makes sure we did not have an error in reloading and maintenance is still active
+                set_maintenance_mode(False)