[#2293] [WebUI] Fix plugins not loading when using WebUI plugin

- Any plugins that were started before the WebUI plugin would not be loaded
   upon starting the web server and would be not show up. The fix is to use
   web.pluginmanager.start to get all enabled plugins from core.
 - Update log message output for enable/disable in pluginmanager

deluge/ui/web/json_api.py

@@ -379,7 +379,9 @@ class WebApi(JSONComponent):
             self.sessionproxy = SessionProxy()
 
     def disable(self):
-        if not client.is_classicmode():
+        if client.is_classicmode():
+            component.get("Web.PluginManager").stop()
+        else:
             client.disconnect()
             client.set_disconnect_callback(None)
 
@@ -387,7 +389,9 @@ class WebApi(JSONComponent):
         client.register_event_handler("PluginEnabledEvent", self._json.get_remote_methods)
         client.register_event_handler("PluginDisabledEvent", self._json.get_remote_methods)
 
-        if not client.is_classicmode():
+        if client.is_classicmode():
+            component.get("Web.PluginManager").start()
+        else:
             client.set_disconnect_callback(self._on_client_disconnect)
 
             if component.get("DelugeWeb").config["default_daemon"]:

deluge/ui/web/pluginmanager.py

@@ -59,7 +59,7 @@ class PluginManager(PluginManagerBase, component.Component):
         try:
             plugin = component.get("WebPlugin." + name)
         except KeyError:
-            log.info("Plugin has no web ui")
+            log.debug("'%s' plugin contains no WebUI code, ignoring WebUI disable call.", name)
             return
 
         info = gather_info(plugin)
@@ -81,7 +81,7 @@ class PluginManager(PluginManagerBase, component.Component):
         try:
             plugin = component.get("WebPlugin." + name)
         except KeyError:
-            log.info("Plugin has no web ui")
+            log.info("'%s' plugin contains no WebUI code, ignoring WebUI enable call.", name)
             return
 
         info = gather_info(plugin)