Update to v1.4

latest version/templates/web/updatedatabase.html

@@ -0,0 +1,21 @@
+{% extends 'base.html' %}
+{% block header %}
+<h1>{% block title %}Update databases{% endblock %}</h1>
+{% endblock %}
+
+{% block content %}
+<form method="post" enctype="multipart/form-data">
+    <label for="name">Old database</label>
+    <input type="file" name="file">
+    <input type="submit" value="Submit">
+</form>
+<div class="content">
+    这里可以将旧版本的数据库同步到新版本的数据库，并刷新用户拥有的角色列表。<br />
+    可上传文件: arcaea_database.db和arcsong.db<br />
+    新数据库不存在的数据会被添加，存在的数据将不会被改变。<br /><br />
+    Here you can synchronize the old version of the database to the new version of the database and refresh the list of
+    characters owned by players.<br />
+    Uploadable files: arcaea_database.db & arcsong.db<br />
+    Data that does not exist in the new database will be added and the existing data will not be changed.
+</div>
+{% endblock %}