Removed non-English translations
Removed other English variants
Revert "Removed other English variants"

This reverts commit a532d62098f2c8b24eb7a9a9675d87905afc9dc0.
Revert "Removed non-English translations"

This reverts commit 81f4a7c2a7459f58f3c9545860915ac5e50c9a44.
Removed unused translation
Merge pull request #10 from zendesk/trav/remove_unused_translations

[APPS-1290] Remove unused strings in BigCommerce App