Add warning to remove from queue dialog

frontend/src/Activity/Queue/RemoveQueueItemModal.css

@@ -1,3 +1,4 @@
-.message {
+.messageRemove {
   margin-bottom: 30px;
+  color: $dangerColor;
 }

frontend/src/Activity/Queue/RemoveQueueItemModal.js

@@ -69,10 +69,14 @@ class RemoveQueueItemModal extends Component {
           </ModalHeader>
 
           <ModalBody>
-            <div className={styles.message}>
+            <div>
               Are you sure you want to remove '{sourceTitle}' from the queue?
             </div>
 
+            <div className={styles.messageRemove}>
+              Removing will remove the download and the file(s) from the download client.
+            </div>
+
             <FormGroup>
               <FormLabel>Blacklist Release</FormLabel>
               <FormInputGroup