Offer auto completion for full text search

[wechsler42]

Is your feature request related to a problem? Please describe. Text Search works actually without auto completion of the search terms. So there are no suggestions derived from the database index.

Describe the solution you'd like I suggest to offer an auto completion feature for search terms of the full text search derived from the current database index.

[ciur]

@wechsler42, auto completion for FTS would be a great feature. Thanks for heads-up!