Partial backport of 9.0 commit a14f89c8 to 8.0
<base href=""> are not well supported in some webmails
Replace absolute URLs by full path appending the domain.
Closes #10062
Partial backport of 9.0 commit a14f89c8 to 8.0
<base href=""> are not well supported in some webmails
Replace absolute URLs by full path appending the domain.
Closes #10062