Allow configuring types language

[ledsoft]

As a TermIt administrator, I want to be able to specify a file containing the definition of types users can use to classify terms.

Currently the types (based on UFO ontology) are loaded from a file that is packed into the application archive. This cause any changes to the types language to require rebuilding the project. Instead, it should be at least possible to specify the path to the language file as a parameter on startup, with the built-in file used as a default when no custom one is provided.

This is motivated by attempts to incorporate TermIt into the SGoV assembly line, which uses a different language to stereotype terms.