PLT-2697 Fixing team admins (#2900)

* PLT-2697 Fixing team admins

* Fixing eslint error

* Fixing loc issues

* Fixing func

* Fixing func

webapp/components/post_info.jsx

@@ -5,6 +5,8 @@ import $ from 'jquery';
 import * as Utils from 'utils/utils.jsx';
 import TimeSince from './time_since.jsx';
 import * as GlobalActions from 'action_creators/global_actions.jsx';
+import TeamStore from 'stores/team_store.jsx';
+import UserStore from 'stores/user_store.jsx';
 
 import Constants from 'utils/constants.jsx';
 
@@ -30,7 +32,7 @@ export default class PostInfo extends React.Component {
     createDropdown() {
         var post = this.props.post;
         var isOwner = this.props.currentUser.id === post.user_id;
-        var isAdmin = Utils.isAdmin(this.props.currentUser.roles);
+        var isAdmin = TeamStore.isTeamAdminForCurrentTeam() || UserStore.isSystemAdminForCurrentUser();
 
         if (post.state === Constants.POST_FAILED || post.state === Constants.POST_LOADING || Utils.isPostEphemeral(post)) {
             return '';