Fix dropdown not storing selected state

ldvspec/lofardata/templates/lofardata/workspecification/create_update.html

@@ -183,10 +183,16 @@
                                                     data-filter="{{ filter.lookup_type }}"
                                                     style="width: 12rem">
                                                 {#for some reason, styling is not applied otherwise#}
-                                                <option selected value="">All</option>
+
+                                                {% if filter.default == "" %}
+                                                    <option selected value="">All</option>
+                                                {% else %}
+                                                    <option value="">All</option>
+                                                {% endif%}
+
                                                 {% for option in filter.choices %}
                                                     {% if filter.default == option.0 %}
-                                                        <option value="{{ option.0 }}">{{ option.0 }}</option>
+                                                        <option selected value="{{ option.0 }}">{{ option.0 }}</option>
                                                     {% else %}
                                                         <option value="{{ option.0 }}">{{ option.0 }}</option>
                                                     {% endif %}