Test cases:
1. Change the Page Name then click button 'Go', the page content should be changed 2. Change the content of a page, then click "Save changes", a message "Page saved" should be displayed. and you will be redirected to the default page: "Home".
Test cases:
1. Change the Page Name then click button 'Go', the page content should be changed
2. Change the content of a page, then click "Save changes", a message "Page saved" should be displayed. and you will be redirected to the default page: "Home".