WebAuthorProfile: fix XSS vulnerability

* Fixes cross-site scripting vulnerability due to lack of escaping
  variables in output.

Reviewed-by: Tibor Simko <tibor.simko@cern.ch>
Merge branch 'maint-1.1'

* maint-1.1:
  WebAuthorProfile: fix XSS vulnerability
Merge branch 'master' into next

* master:
  WebAuthorProfile: fix XSS vulnerability