enhancement / fixes on kdb function interface

. moved etc/q.q to cfg/dbstore.q
. integrated more kdb fumction calls
. added unit test.
. split tick and hist db disk locations
. in memory tick updates, flush tables to disk on exit
. fixes to getOhlcM1PriceHistory
kdb mem table rework and fixes

. reverted split of dbt and dbh
. changed mem table name mnemonic to _tt
. added further kdb function interface abstraction for add/tb create