Fix review problems

- removed superfluous position and classes
- fixed compact view
- fixed event list summary avatar and text overlap
- fixed a problem where the mention list refuses to load.

src/components/views/elements/IRCTimelineProfileResizer.tsx

@@ -77,7 +77,9 @@ export default class IRCTimelineProfileResizer extends React.Component<IProps, I
     }
 
     private onMoueUp(event: MouseEvent) {
-        SettingsStore.setValue("ircDisplayNameWidth", this.props.roomId, SettingLevel.ROOM_DEVICE, this.state.width);
+        if (this.props.roomId) {
+            SettingsStore.setValue("ircDisplayNameWidth", this.props.roomId, SettingLevel.ROOM_DEVICE, this.state.width);
+        }
     }
 
     render() {