Activiy ID not found for translated environments

[pbatroff]

In translated environments, the Extension throws the error Invalid Activity ID, this might cause attachments not being saved. This is because the translated activity names are used to create a new activity, but the api fails with it.

Reproduction:
Rename Activity Phone call to Anruf (German translation), and try to add an activity from outlook to a contact.

Tested Version:
2.5.1 and 3.0.4 (latest release) on both client and API with CiviCRM 5.19.3 and CiviCRM 5.20.0

[pbatroff]

I created a patch to fix this and soon will have a PR, leaving the default behaviour in place in case the mapping doesn't work. Otherwise the activity_id will be used as a parameter to create an activity.

I need to properly test this first.