Convert Factory to variadic templates
Update Spanish translation. Closes #1687.
Delete unused copy-and-shift constructor for TimeRange
Fix non-pch compilation
Rearrage SinkMessage to eliminate padding
Delete some old unused stuff
Reenable shift-enter in the translation assistant

Newlines in the text are converted to \N, so no reason not to allow it
there.

Closes #1691.
Fix potential crash when a thesaurus finishes loading