make username clickable on mobile view (#6519)

webapp/components/user_profile.jsx

@@ -87,7 +87,6 @@ export default class UserProfile extends React.Component {
             >
                 <div
                     className='user-popover'
-                    id={'profile_' + this.uniqueId}
                 >
                     {name}
                 </div>

webapp/sass/responsive/_mobile.scss

@@ -217,7 +217,8 @@
     }
 
     .user-popover {
-        pointer-events: none;
+        cursor: pointer;
+        display: inline-block;
     }
 
     .signup-team__container {
@@ -326,8 +327,6 @@
             }
 
             .col__name {
-                pointer-events: none;
-
                 .user-popover {
                     max-width: 130px;
                 }