implemented deletion of times

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

frontend/src/routes/time/Index.svelte

@@ -64,6 +64,24 @@
         }
     }
 
+    function onAbort(){
+        detail = null;
+    }
+
+    async function onDrop(time_id){
+        const url = api(`time/${time_id}`);
+        const res = await fetch(url,{
+            credentials:'include',
+            method:'DELETE'
+        });
+        if (res.ok){
+            delete times[time_id];
+            error = false;
+        } else {
+            error = await res.text();
+        }
+    }
+
     function openTask(tid){
         router.navigate(`/task/${tid}/view`);
     }
@@ -148,7 +166,7 @@
             {/if}
             {#if detail == time.id}
             <td colspan="5">
-                <TimeEditor record={time} onSet={update} />
+                <TimeEditor record={time} {onAbort} {onDrop} onSet={update} />
             </td>
             {:else}
             <td class="start_end" onclick={e => toggleSelect(time.id)}>