Conflicts in the attributes of the opensearch schemas

[psaiz]

The schema of opendata defines 3 objects (records, glossary and docs). All these obejcts are stored under indices like record-<type>. The searches are done in all the indices.

There are some conflicts in the attributes defined for those objects:

• Experiment:

Type | Index names
-- | --
keyword | records-docs-v1.0.0-1700664727, records-record-v1.0.0-1700664727
object | records-glossary-term-v1.0.0-1700664727

• Collections:

keyword | records-record-v1.0.0-1700664727
-- | --
object | records-docs-v1.0.0-1700664727, records-glossary-term-v1.0.0-1700664727

It would be better to be consistent, and store the attribute with the same type for all the objects

[psaiz]

Most of the issues have been addressed. The one left is for collections. That one is a bit trickier, so it deserves its own PR

[psaiz]

For the record, the one of experiment has also been fixed (it used to be an array of dictionaries for glossaries, and an array for docs and records)