Add API docs for events. s/tabs/spaces/ Fixes #2529801

fixed comments to make api docs generate

added @module descriptions in comments

clean up comments to allow API to be constructed without errors

add comments to all recordset submodules

create defaultUpdateHash method + indexer updateHash method

changes to getRecord() - now accepts id or index

added testcases for recordset indexer update()

recordset indexer plugin updates hashtables on add() and remove()

recordset-base supports primary indexing by ID - custom indexing can be performed on indexer plugin

recordset indexer works with defaultIndex (id)

cleanup recordset