Include Option instead of Exclude Option for Search Tables

[pgrill79]

I have the #exclude-table-from-search option to exclude tables from a search - but i think the other way round would make more sense, because nomrally you have 3-4 main artefacts (tables) to search. In our case: Animals, Clients and Samples.

But i have about 50 relation tables / view ... if i now only want to seach for animals, clients and samples, i have to add 47 tables to the exclude array, and if i add a new table i have to think to add this table as well.

I think it would be better to explicitely tell which tables to search for - so in our case Animals, Clients and Samples.
If the array is empty, all tables should be search