Decouple {EE|GDB}Helper from JUnit so that it gets easier to use the new test style

o Introduced new top-level test classes: {EE|GDB}JUnitSuite, EEJUnitSuite
o Converted EqualsTest to use EEFunSuite as an example
Rename new suite classes to Cypher{JUnit|Fun}Suite and move to commons

o Adds a provided dependency from cypher to commons for tests
Rename StatisticsChecker to QueryStatisticsTestSupport

o Clean up of QueryStatisticsTestSupport and synced with QueryStatistics again
o Change QS.deleted{Node|Rel} => QS.{node|rel}Deleted for consistency
Merge pull request #1980 from boggle/2.0-funtest

Better support for using new Cypher test style with {EE|GDB}Helper