Add upgrade routine for 1.3
Add currency options
Add additional defaults for 1.3 upgrade
Allow admin to select which currency and link to bricklink
Add a settings getter
Add cache settings, but don't display or use them yet
Fix user check
Add code comments. Closes #4.
Rename theme list widget
Add set detail widget. Closes #24.
Add widgets to settings description
Update readme for 1.3
Merge pull request #25 from NateJacobs/dev

Update to 1.3