elevation prompt && uac warning

Signed-off-by: 21pages <pages21@163.com>

src/ui/index.tis

@@ -1242,3 +1242,9 @@ function refreshCurrentUser() {
 function getHttpHeaders() {
     return "Authorization: Bearer " + handler.get_local_option("access_token");
 }
+
+$(body).timer(1000, function check_elevation(){
+    if (is_win && handler.is_release() && !handler.is_installed() && !handler.is_root()) {
+        msgbox("custom-elevation-nocancel", "Prompt", "elevation_prompt");
+    }
+});