preparing deletion of page version

frontend/src/routes/wiki/View.svelte

@@ -34,6 +34,10 @@
         return patch({members:newMembers});
     }
 
+    async function dropVersion(){
+        if (!confirm(t('confirm_delete',{element:t('version_of',{version:page.version,element:page.title})}))) return;
+    }
+
     function nonMember(json){
         return !page.members[json.id];
     }
@@ -126,6 +130,7 @@
     <span class="warn">{t('not_recent_version')}</span>
     {/if}
     <button onclick={toggleDetail} class="symbol" title={t('toggle_objects',{objects:t('users')})}></button>
+    <button onclick={dropVersion} class="symbol" title={t('delete_object',{object:t('version')})}> </button>
     {#if detail}
     {#if editable}
     <PermissionEditor members={page.members} {addMember} {dropMember} {getCandidates} {updatePermission} />