- Delete tests testing deprecated server side indexing flows
- Delete `Local(Plaintext|Org|Markdown|Pdf)Config' methods, files and
references in tests
- Index test data via new helper method, `get_index_files'
- It is modelled after the old `get_org_files' variants in main app
- It passes the test data in required format to `configure_content'
Allows maintaining the more realistic tests from before while
using new indexing mechanism (rather than the deprecated server
side indexing mechanism
- Previous was incorrectly plural but was defining only a single model
- Rename chat model table field to name
- Update documentation
- Update references functions and variables to match new name