Fix value saving for multiselect

Merge pull request #10 from oomphinc/balbuf/fix-field-saving

Fix field value save issue with multiple values

Fix human readable values in all contexts

This ensures the readable values come through in emails as well as entry listings.

Add human readable display value

Show term names instead of term IDs.

Initial release

Merge pull request #1 from oomphinc/initial-plugin

Initial working plugin