Merge pull request #3107 from marc1706/ticket/13280
[ticket/13280] Properly format the current page and add sanitizer to tests
* marc1706/ticket/13280:
[ticket/13280] Remove unneeded str_replace in build_url()
[ticket/13280] Only run sanitizer for server superglobal and modify tests
[ticket/13280] Seperate server sanitizer call and add comment
[ticket/13280] Add additional sanitizer for ampersands in server superglobal
[ticket/13280] Correctly format user page for build_url()
[ticket/13280] Properly format the current page and add sanitizer to tests