Add start copyright date for various POT files
Correct English for HTML activation email

Fortunately no string freeze break as the correct string already appears in the
text version.
Fix messages
Various: updated translations

Updated against templates plus, a number of languages at 100%
Update languages against templates

Ran update_against_templates on server these are the results
Use actual select elements for dropdowns.

This avoids some weird behaviours with the select2 plugin.

Fixes bugs 2732 and 2733.