Issue #2346911: Fix an incorrect default value callback.
Merge pull request #80 from jsacksick/fix_default_value

Issue #2346911: Fix an incorrect default value callback.
Add a number format entity

- Adds a number format entity.
- Adds a importer for number formats.
- Automatically imports the number formats for the enabled languages.
Merge pull request #79 from Jbekker/add-numberformat-entity

Add a number format entity