Move `get_translated_public_trial_values` to og.base.classification and

rename it to `translated_public_trial_terms`.
Journal tests: Replace uses of `createContentInContainer` with builder.

(necessary for properly setting default values)
Journalize any changes to `public_trial` field.
Updated translations for journal entries.
Make `edit_public_trial` form inherit from p.directives.dexterity.EditForm so

all necessary events are fired for us.