-New translations clients/secrets selector to work around Microsoft's
one-time set limit for setClientID() and setClientSecret().

-Choosing to turn off Translations in Preferences now completely turns
off and clears the translations panel immediately.

-The Translator's state is now saved properly (so if you turn off
translations in the middle of translating and turn them back on it will
pick up right where it left off and display the translations it already
completed).