Fixes

[wpmltm-4001] Only show the translation pickup mode if a translation serivce is active and authenticated.
[wpmltm-3998] Fix issue with untranslated terms appearing as translated in ATE.
[wpmltm-3988] Improve detection of base64 encoded strings to avoid false positives.
[wpmltm-3943] Fixed so duplicate post is not set to in progress until it's set to be translated independently.