Remove user from list when selected in DM modal (#5884)

webapp/components/multiselect/multiselect.jsx

@@ -111,7 +111,8 @@ export default class MultiSelect extends React.Component {
     }
 
     render() {
-        const options = this.props.options;
+        const options = Object.assign([], this.props.options);
+        const values = this.props.values;
 
         let numRemainingText;
         if (this.props.numRemainingText) {
@@ -142,6 +143,17 @@ export default class MultiSelect extends React.Component {
             );
         }
 
+        const valueMap = {};
+        for (let i = 0; i < values.length; i++) {
+            valueMap[values[i].id] = true;
+        }
+
+        for (let i = options.length - 1; i >= 0; i--) {
+            if (valueMap[options[i].id]) {
+                options.splice(i, 1);
+            }
+        }
+
         if (options && options.length > this.props.perPage) {
             const pageStart = this.state.page * this.props.perPage;
             const pageEnd = pageStart + this.props.perPage;

webapp/components/sidebar.jsx

@@ -677,7 +677,10 @@ export default class Sidebar extends React.Component {
             <li key='more'>
                 <a
                     href='#'
-                    onClick={() => this.showMoreDirectChannelsModal()}
+                    onClick={(e) => {
+                        e.preventDefault();
+                        this.showMoreDirectChannelsModal();
+                    }}
                 >
                     <FormattedMessage
                         id='sidebar.moreElips'