implemented deletion of positions

frontend/src/routes/document/PositionList.svelte

@@ -8,6 +8,13 @@
 
     let editable = $derived(document.state == 1);
 
+    async function updatePositions(resp){
+        let json = await resp.json();
+        document.positions = {};
+        setTimeout(() => document.positions = json,100)
+        error = null;
+    }
+
     async function movePos(number,step){
         const url = `${location.protocol}//${location.host.replace('5173','8080')}/api/document/${document.id}/position`;
         const resp = await fetch(url,{
@@ -16,10 +23,21 @@
             body:JSON.stringify({position:number,move:step})
         });
         if (resp.ok){
-            let json = await resp.json();
-            document.positions = {};
-            setTimeout(() => document.positions = json,10)
-            error = null;
+            updatePositions(resp);
+        } else {
+            error = await resp.text();
+        }
+    }
+
+    async function drop(number){
+        const url = `${location.protocol}//${location.host.replace('5173','8080')}/api/document/${document.id}/position`;
+        const resp = await fetch(url,{
+            method: 'DELETE',
+            credentials:'include',
+            body:JSON.stringify({position:number})
+        });
+        if (resp.ok){
+            updatePositions(resp);
         } else {
             error = await resp.text();
         }
@@ -30,7 +48,6 @@
 <table class="positions">
     <thead>
         <tr>
-            <th></th>
             <th>{t('document.pos')}</th>
             <th>{t('document.code')}</th>
             <th>{t('document.title_or_desc')}</th>
@@ -43,10 +60,9 @@
     </thead>
     <tbody>
         {#each Object.entries(document.positions) as [id,pos]}
-        <Position currency={document.currency} bind:pos={document.positions[id]} editable={editable} {submit} {movePos} />
+        <Position currency={document.currency} bind:pos={document.positions[id]} editable={editable} {submit} {movePos} {drop} />
         {/each}
         <tr class="sums">
-            <td></td>
             <td colspan="2"></td>
             <td>{t('document.net_sum')}</td>
             <td>{document.net_sum/100}&nbsp;{document.currency}</td>