Updating to work with MySQL / Fixing importation

I had some trouble using this library with MySQL. These are the changes I've found to fix my problems. Do they still work for Postgresql?

I have some corresponding changes for the glottosAdmin that I can push if this PR is accepted. 

Additionally, I've added a commit that fixes importing. The Finder object was being reused and keeping the files from previous locale imports causing new locales to have the original locale's translations.