Remove token anywhere

* now a user can remove a user anywhere in the create study

.idea/dictionaries/belli.xml

@@ -2,6 +2,7 @@
   <dictionary name="belli">
     <words>
       <w>screenshot</w>
+      <w>semibold</w>
     </words>
   </dictionary>
 </component>
\ No newline at end of file

app/Token.php

@@ -92,7 +92,7 @@ class Token extends Model
         else $token->author = Auth::user()->id;
 
         if(!empty($tokenToSave['properties']))$token->properties = $tokenToSave['properties'];
-
+        else $token->properties = '{"description":""}';
 
     }