Fess Main page title

(from github.com/AliAAziz)
I would like to change the title of Fess main page and also add link for back to previous page

(from github.com/marevol)
You can edit JSP file in Design page.

(from github.com/AliAAziz)
I change the text in \fess-12.2.3\app\WEB-INF\classes\fess_label.properties but it doesn’t reflect the changes.
is there any other place to modify these text.