PLT-3028 Added CTRL+/ to show shortcuts (#3181)

* Added CTRL / to show shortcuts

* Simplified code

webapp/actions/channel_actions.jsx

@@ -4,7 +4,12 @@
 import {browserHistory} from 'react-router';
 
 import TeamStore from 'stores/team_store.jsx';
+import Client from 'utils/web_client.jsx';
 
 export function goToChannel(channel) {
     browserHistory.push(TeamStore.getCurrentTeamRelativeUrl() + '/channels/' + channel.name);
-}
+}
+
+export function executeCommand(channelId, message, suggest, success, error) {
+    Client.executeCommand(channelId, message, suggest, success, error);
+}