Add Freemail context for LCWoT compatibility

LCWoT requires a context in order to list local identities.
Use correct label for SMTP address.
Update French and Norwegian translations

Thanks to volunteers on Transifex.
Add German, Italian, Brazilian Portuguese, Portuguese, and Simplified Chinese translations

Thanks to volunteers on Transifex.
Merge branch 'fix-smtp-address-label' into master
Set version to 0.2.5.