Renamed SharkQueryExecutor and associated test.
Rename SharkConversionStrategy
Rename SharkWhereClause
Rename SharkConvertQueryTest
Rename shark packages to sparksql
Rename the DataSources.shark to DataSources.sparksql
Minor renames from Shark to Spark SQL
Update the JavaScript to refer to Spark SQL
Update the integration tests to run against a spark server
Make integrationTest use the build's getHdfsUrl correctly

Previously, it was calling SharkDataInserter.getHdfsUrl by accident,
which meant that setting hdfs.url in the command line didn't work.
Switch the integrationTest to refer to Spark SQL instead of Shark