fix: put unassigned review assignment contols on one small line (ietf-tools#3780)

Author: rjsparks

ietf/templates/group/manage_review_requests.html

@@ -180,14 +180,14 @@ <h1>
                                 {% endif %}
                                 {% bootstrap_field r.form.action layout="horizontal" size="sm" %}
                             </div>
-                            <div class="reviewer-controls mx-1 flex-fill">
+                            <div class="reviewer-controls mx-1 flex-fill row">
                                 {% if r.form.review_type %}
-                                    {% bootstrap_field r.form.review_type layout="horizontal" size="sm" %}
+                                    {% bootstrap_field r.form.review_type layout="horizontal" wrapper_class="col" size="sm" %}
                                 {% endif %}
-                                {% bootstrap_field r.form.reviewer layout="horizontal" size="sm" %}
-                                {% bootstrap_field r.form.add_skip layout="horizontal" size="sm" %}
+                                {% bootstrap_field r.form.reviewer layout="horizontal" wrapper_class="col row" size="sm" %}
+                                {% bootstrap_field r.form.add_skip layout="horizontal" wrapper_class="col col-2" size="sm" %}
                                 <button type="button"
-                                        class="btn btn-sm btn-primary undo"
+                                        class="btn btn-sm btn-primary undo col col-1"
                                         title="Cancel assignment"
                                         data-initial="{{ r.form.fields.reviewer.initial|default:"" }}">
                                     Cancel