Search highlights matching part of table names but doesn't narrow down the list

## What did you do?

- I connected to my database,
- I've typed `ten` into the search field,

## What did you expect to happen?

- To see only those tables that have `ten` as a part of their name,
- To see `ten` part of tables names highlighted,

## What actually happened?

- Only the `ten` part of table names was highlighted,
- List wasn't narrowed to matching tables,

## What software versions are you using?

Postico version: 1.3.2 (2318)

macOS version: 10.12.6 (16G1212)

PostgreSQL version: 9.5.10

Reproduce the search in Postico 1.3.2 on macOS with a PostgreSQL database, entering `ten` in the table search field. Trace how matching text is highlighted versus how the table list is filtered; done means only tables whose names contain `ten` remain visible while the matching text stays highlighted.

Written by the indexing model from the issue text.