feat: Move acronym to a property
- item acronym moved to a property acronym in the Item Tree
- the value of the property is an array of objects {language: nullable string, value: string} and cannot be null
- the property can appear in an item of type org
- no changes to Cayenne output
CR-811
fix(convert.clj): revert citeproc-institution acronym selection
Edited by Panos Pandis