SearchView: Avoid querying everytime tag is selected

Signed-off-by: José Luis Di Biase <josx@interorganic.com.ar>
Sending conf search option to backends to validate input

Signed-off-by: José Luis Di Biase <josx@interorganic.com.ar>
Assuring collections are fetched when changing views

Signed-off-by: José Luis Di Biase <josx@interorganic.com.ar>