Added spinner icon to select_team listing after clicking on a team to load (#4120)

webapp/sass/routes/_signup.scss

@@ -493,9 +493,8 @@
         top: .66em;
 
         &.fa-spin {
-            color: $gray;
             font-size: .9em;
-            right: 10px;
+            right: -2px;
             top: 16px;
         }
     }