Adding: criteria to all search, scheds search conf and schema validation

Signed-off-by: José Luis Di Biase <josx@interorganic.com.ar>
Description on schema for search options

Signed-off-by: José Luis Di Biase <josx@interorganic.com.ar>
Merge pull request #17 from inaes-tic/search-custom-criteria

Adding: criteria to all search, scheds search conf and schema validation