Start to implement data export

src/controllers/account_controller.rs

@@ -178,4 +178,11 @@ pub fn reset_user_password(r: &mut HttpRequestHandler) -> RequestResult {
     account_helper::destroy_password_reset_token_for_user(&user_id)?;
 
     r.success("Password changed!")
+}
+
+/// Export account's data
+pub fn export_data(r: &mut HttpRequestHandler) -> RequestResult {
+    r.need_user_password("password")?;
+
+    r.success("Go on")
 }