[QA] Factor the way to compute window's name
[QA] Mark some GPS layer strings for translation.
Allow attempting to open a URL in a waypoint comment or description.

Very simple check to see if the text starts with 'http' before attempting to open it.
Fix routes display in different coordinate views.

Missed from the GPX-Routes code addition SHA: 0d2b891f5f4673f0dd1142dcd7e1eb08e4248090
Avoid CRITICAL warnings when updating a waypoint. Check the symbol value is something before attempting to use it.

Error introduced in commit SHA: 70cefedcb427c34e2e3db3bbfcc7e140d55b31a8