static: 迁移 mgmt 前端到 static/public 并移除静态列表

将 mgmt Jinja2 模板原封不动迁移为纯静态 HTML/CSS，
删除用户列表与模块列表，改为静态提示文字。

static/public/mgmt/features/process.css

@@ -0,0 +1,74 @@
+.newBtn,
+.flushBtn,
+.stopBtn {
+    width: 84px;
+    height: 42px;
+    font-size: 16px;
+    font-weight: bold;
+    letter-spacing: 1px;
+    cursor: pointer;
+}
+
+.newBtn {
+    background-color: #5cff007d;
+}
+
+.flushBtn {
+    background-color: #5757577d;
+    margin-left: 60px;
+}
+
+.stopBtn {
+    background-color: #ff00007d;
+}
+
+.text,
+.title {
+    font-size: 20px;
+}
+
+td,
+th {
+    width: 180px;
+    text-align: center;
+}
+
+#inProgressText {
+    font-size: 20px;
+    margin-top: 5px;
+    letter-spacing: 2px;
+}
+
+/* modal window style */
+.modal-con {
+    width: 100%;
+    height: 100%;
+    background-color: rgba(68, 94, 65, 0.77);
+    position: absolute;
+    left: 0px;
+    top: 0px;
+    display: none;
+    justify-content: center;
+    z-index: 1;
+}
+
+.modal-con .window {
+    width: 200px;
+    height: 120px;
+    background-color: #5cff007d;
+    padding: 0px 10px;
+}
+
+.modal-con .window .top-bar {
+    display: flex;
+    justify-content: end;
+}
+
+.modal-con .window .top-bar .close-btn {
+    cursor: pointer;
+}
+
+.modal-con .window .create-btn,
+.modal-con .window .input .input-area {
+    margin-top: 5px;
+}