When downloading a file with a filter on a boolean attribute, the application crashes

[mark-de-haan]

Reproduce

• Import TypeTest
• Go to the dataexplorer and look up TypeTest
• Set a filter to xboolnillable to false
• Press download, and download as xlsx with labels

Expected

I get an xlsx download with the 12 items found with the filter

Observed

11:05:44.739 [ajp-bio-8009-exec-21] ERROR o.m.d.c.DataExplorerController - Attribute [xboolnillable] query value is of type [String] instead of [Boolean]
org.molgenis.data.MolgenisDataException: Attribute [xboolnillable] query value is of type [String] instead of [Boolean]
	at org.molgenis.data.postgresql.PostgreSqlUtils.getPostgreSqlQueryValue(PostgreSqlUtils.java:103) ~[molgenis-data-postgresql-2.0.0-SNAPSHOT.jar:2.0.0-SNAPSHOT]
	at org.molgenis.data.postgresql.PostgreSqlQueryGenerator.getSqlWhere(PostgreSqlQueryGenerator.java:771) ~[molgenis-data-postgresql-2.0.0-SNAPSHOT.jar:2.0.0-SNAPSHOT]
	at org.molgenis.data.postgresql.PostgreSqlQueryGenerator.getSqlSelect(PostgreSqlQueryGenerator.java:449) ~[molgenis-data-postgresql-2.0.0-SNAPSHOT.jar:2.0.0-SNAPSHOT]
	at org.molgenis.data.postgresql.PostgreSqlRepository$1.getBatch(PostgreSqlRepository.java:408) ~[molgenis-data-postgresql-2.0.0-SNAPSHOT.jar:2.0.0-SNAPSHOT]
	at org.molgenis.data.support.BatchingQueryResult.getBatch(BatchingQueryResult.java:36) ~[molgenis-data-2.0.0-SNAPSHOT.jar:2.0.0-SNAPSHOT]