refactor web interface

templates/import_servers.html

@@ -0,0 +1,23 @@
+{% extends "base.html" %}
+{% block title %}Import hostów z CSV - /etc/hosts Manager{% endblock %}
+{% block content %}
+<div class="card">
+  <div class="card-header">
+    <h2>Import serwerów z CSV</h2>
+  </div>
+  <div class="card-body">
+    <form method="POST" action="{{ url_for('import_servers') }}" enctype="multipart/form-data">
+      <div class="mb-3">
+        <label for="file" class="form-label">Wybierz plik CSV</label>
+        <input type="file" name="file" id="file" class="form-control" accept=".csv" required>
+      </div>
+      <button type="submit" class="btn btn-primary">Importuj</button>
+    </form>
+  </div>
+</div>
+<div class="mt-3 text-center">
+  <a href="{{ url_for('add_server') }}" class="btn btn-secondary">Dodaj nowy serwer</a>
+  <a href="{{ url_for('server_list') }}" class="btn btn-secondary">Lista serwerów</a>
+  <a href="{{ url_for('export_servers_to_csv') }}" class="btn btn-secondary">Eksportuj serwery do CSV</a>
+</div>
+{% endblock %}