Expose power level setting for widgets

Fixes https://github.com/vector-im/riot-web/issues/4866

Signed-off-by: Travis Ralston <travpc@gmail.com>

src/components/views/rooms/RoomSettings.js

@@ -44,6 +44,8 @@ const plEventsToLabels = {
     "m.room.history_visibility": "To change the room's history visibility, you must be a",
     "m.room.power_levels": "To change the permissions in the room, you must be a",
     "m.room.topic": "To change the topic, you must be a",
+
+    "im.vector.modular.widgets": "To modify widgets in the room, you must be a",
 };
 
 const plEventsToShow = {
@@ -54,6 +56,8 @@ const plEventsToShow = {
     "m.room.history_visibility": {isState: true},
     "m.room.power_levels": {isState: true},
     "m.room.topic": {isState: true},
+
+    "im.vector.modular.widgets": {isState: true},
 }
 
 const BannedUser = React.createClass({