When RICHER_CARD_COMMENT_EDITOR=true, use richer editor

also when editing card description.

Thanks to xet7 !

client/components/cards/cardDescription.js

@@ -0,0 +1,33 @@
+const descriptionFormIsOpen = new ReactiveVar(false);
+
+BlazeComponent.extendComponent({
+  onDestroyed() {
+    descriptionFormIsOpen.set(false);
+  },
+
+  descriptionFormIsOpen() {
+    return descriptionFormIsOpen.get();
+  },
+
+  getInput() {
+    return this.$('.js-new-description-input');
+  },
+
+  events() {
+    return [
+      {
+        'submit .js-card-description'(event) {
+          event.preventDefault();
+          const description = this.currentComponent().getValue();
+          this.data().setDescription(description);
+        },
+        // Pressing Ctrl+Enter should submit the form
+        'keydown form textarea'(evt) {
+          if (evt.keyCode === 13 && (evt.metaKey || evt.ctrlKey)) {
+            this.find('button[type=submit]').click();
+          }
+        },
+      },
+    ];
+  },
+}).register('descriptionForm');