- various __all__

- serializer: track search, reorder module files
- autocomplete: allow simple string value selection
- playlist editor:
    - ui & flow improve
    - init data
    - save user settings
    - autocomplete
    - fix bugs
    - discard changes

aircox_streamer/templates/aircox_streamer/source_item.html

@@ -53,7 +53,7 @@
                     {# TODO: select station => change the shit #}
                     <a-autocomplete class="control is-expanded"
                         url="{% url "aircox:sound-list" %}?station={{ station.pk }}&search=${query}"
-                        name="sound_id" :model="Sound" label-field="name"
+                        name="sound_id" :model="Sound" value-field="id" label-field="name"
                         placeholder="{% translate "Select a sound" %}">
                             <template v-slot:item="{item}">
                                 [[ item.data.name ]]