BibIndex: ingestion health and "unneeded" indexes

• Provides a fix for find_affected_records_for_index function which limits the number of history entries that are taken from databse.

• Provides a fix for handling wrong names of indexes, which were specified in CLI.

• Changes the behaviour of bibindex so now it updates index's last_updated information also when index is still up to date and no indexing had to be done. (closes #1632)

Signed-off-by: Grzegorz Szpura <grzegorz.szpura@cern.ch>
Tested-by: Tibor Simko <tibor.simko@cern.ch>