Add Arbitrary for Dictionary
Add ScalaCheck for DictionaryThrift conversion
Introduce struct into DictionaryImport (part 1 - does nothing)
Remove unused DictionaryThriftStorage.loadFromRef()
Introduce Dictionary import validation
Fix DictionaryThriftStorage to return Option[Dictionary]
Add import-dictionary --force flag for ignoring validation errors
Cleanup dictionary validation usage by using Option[FilePath]
Fix exit code handling in import-dictionary validation cli test
Merge pull request #113 from ambiata/topic/structs-thrift

Add Structs to Dictionary Thrift and import-dictionary validation
Extract common cli test variables into setup
Fix date test arbitrary