Thread:Support/About Mantis:Codev-a8b0bb-Any external task, NOT referen/en

Typo: 'mantis' -> 'Mantis'

Also in:
 * Mantis:Codev-76de35-Check timetracks on removed is/en
 * Mantis:Codev-6febec-Path to mantis/en
 * Mantis:Codev-d1dc1f-URL to mantis/en