PLT-4457 Added AtMention component to better render at mentions (#6563)

* Moved Utils.searchForTerm into an action

* Added easier importing of index.jsx files

* PLT-4457 Added AtMention component to better render at mentions

* Fixed client unit tests

* Fixed merge conflict

* Fixed merge conflicts

webapp/utils/utils.jsx

@@ -388,14 +388,6 @@ export function insertHtmlEntities(text) {
     return newtext;
 }
 
-export function searchForTerm(term) {
-    AppDispatcher.handleServerAction({
-        type: ActionTypes.RECEIVED_SEARCH_TERM,
-        term,
-        do_search: true
-    });
-}
-
 export function getFileType(extin) {
     var ext = extin.toLowerCase();
     if (Constants.IMAGE_TYPES.indexOf(ext) > -1) {
@@ -1312,16 +1304,11 @@ export function isValidPassword(password) {
 }
 
 export function handleFormattedTextClick(e) {
-    const mentionAttribute = e.target.getAttributeNode('data-mention');
     const hashtagAttribute = e.target.getAttributeNode('data-hashtag');
     const linkAttribute = e.target.getAttributeNode('data-link');
     const channelMentionAttribute = e.target.getAttributeNode('data-channel-mention');
 
-    if (mentionAttribute) {
-        e.preventDefault();
-
-        searchForTerm(mentionAttribute.value);
-    } else if (hashtagAttribute) {
+    if (hashtagAttribute) {
         e.preventDefault();
 
         searchForTerm(hashtagAttribute.value);
@@ -1339,6 +1326,15 @@ export function handleFormattedTextClick(e) {
     }
 }
 
+// This should eventually be removed once everywhere else calls the action
+function searchForTerm(term) {
+    AppDispatcher.handleServerAction({
+        type: ActionTypes.RECEIVED_SEARCH_TERM,
+        term,
+        do_search: true
+    });
+}
+
 export function isEmptyObject(object) {
     if (!object) {
         return true;