PLT-3153 Converted slash command triggers to lowercase on save (#3577)

* Converted slash command triggers to lowercase on save

* Made slash commands case insensitive

webapp/actions/channel_actions.jsx

@@ -24,7 +24,11 @@ export function goToChannel(channel) {
 }
 
 export function executeCommand(channelId, message, suggest, success, error) {
-    Client.executeCommand(channelId, message, suggest, success, error);
+    let msg = message;
+
+    msg = msg.substring(0, msg.indexOf(' ')).toLowerCase() + msg.substring(msg.indexOf(' '), msg.length);
+
+    Client.executeCommand(channelId, msg, suggest, success, error);
 }
 
 export function setChannelAsRead(channelIdParam) {

webapp/components/integrations/components/add_command.jsx

@@ -72,7 +72,7 @@ export default class AddCommand extends React.Component {
         const command = {
             display_name: this.state.displayName,
             description: this.state.description,
-            trigger: this.state.trigger.trim(),
+            trigger: this.state.trigger.trim().toLowerCase(),
             url: this.state.url.trim(),
             method: this.state.method,
             username: this.state.username,