document db no longer storing complete template information in separate table:

- dropped table templates
- altered table documents: template_id (ref into templates) → template (name of template)
- templates are now picked up by the document registry

Signed-off-by: Stephan Richter <s.richter@srsoftware.de>

frontend/src/routes/document/TemplateSelector.svelte

@@ -30,8 +30,8 @@
 {#if templates}
 <select bind:value onchange={onchange}>
     <option value={0}>{caption}</option>
-    {#each Object.entries(templates) as [id,template]}
-    <option value={template.id}>{template.name}</option>
+    {#each templates as template}
+    <option value={template}>{template}</option>
     {/each}
 </select>
 {:else}