Implement issue 1 search, order reuse and tracking

po_app/templates/suppliers.html

@@ -25,6 +25,10 @@
     <h2>供应商列表</h2>
     <button type="button" class="btn primary sm" onclick="document.getElementById('supImpModal').style.display='flex'">批量导入 Excel</button>
   </div>
+  <form method="get" class="toolbar" role="search">
+    <input type="search" name="kw" value="{{ kw }}" placeholder="搜索名称、简称或编号" aria-label="搜索供应商" style="max-width:320px;">
+    <button class="btn primary">搜索</button>{% if kw %}<a class="btn" href="{{ url_for('suppliers') }}">清除</a>{% endif %}
+  </form>
   <table class="grid">
     <tr><th>编号</th><th>名称</th><th>联系人</th><th>电话</th><th>付款方式</th><th>税号</th><th>开户银行</th><th>银行帐号</th><th>操作</th></tr>
     {% for s in rows %}