minor improvements:

- page titles
- favicon
- background logo

frontend/src/routes/company/Editor.svelte

@@ -58,9 +58,12 @@
         if (success) caption = t('saved');
         btnEnabled = true;
     }
-
 </script>
 
+<svelte:head>
+    <title>Umbrella – {t('company')}: {company?.name}</title>
+</svelte:head>
+
 <fieldset>
 {#if company}
     <legend>{t('edit_object',{object:company.name})}</legend>

frontend/src/routes/company/Index.svelte

@@ -63,6 +63,10 @@
     onMount(loadCompanies)
 </script>
 
+<svelte:head>
+    <title>Umbrella – {t('companies')}</title>
+</svelte:head>
+
 <fieldset>
     <legend>
         {t('companies')}