modify delete statement to work with SQLite
Merge branch 'review' of https://github.com/Wikidata-lib/property-suggester into review

Conflicts:
	maintenance/UpdateTable.php
Deletemode for Mysql
add sqlite support
fix sqlite...
fix sqlite
use bulk inserts by default - native inserts optional.
Merge pull request #66 from Wikidata-lib/addDeleteModes

Add delete modes