Add return to these onchange and ondrag attributes.

I skipped them during the commit where I added return to all onclicks
because I figure I won't be wrapping these kinds of attributes.
But I feel like it's better to be consistent and you never know when
it might happen.

frontends/etiquette_flask/templates/album_card.html

@@ -6,10 +6,10 @@
 id="{{id}}"
 class="album_card album_card_{{view}}"
 data-id="{{album.id}}"
-ondragstart="on_album_drag_start(event);"
-ondragend="on_album_drag_end(event);"
-ondragover="on_album_drag_over(event);"
-ondrop="on_album_drag_drop(event);"
+ondragstart="return on_album_drag_start(event);"
+ondragend="return on_album_drag_end(event);"
+ondragover="return on_album_drag_over(event);"
+ondrop="return on_album_drag_drop(event);"
 {% if album != "root" and draggable %}
 draggable=true
 {% endif %}

frontends/etiquette_flask/templates/search.html

@@ -154,7 +154,7 @@
 
 {% macro create_orderby_li(selected_column, selected_sorter) %}
 <li class="search_builder_orderby_li">
-    <select onchange="orderby_hide_direction_hook(event);">
+    <select onchange="return orderby_hide_direction_hook(event);">
         <option value="created"   {{"selected" if selected_column=="created" else ""}}   >Creation date</option>
         <option value="area"      {{"selected" if selected_column=="area" else ""}}      >Area</option>
         <option value="width"     {{"selected" if selected_column=="width" else ""}}     >Width</option>