Uncommented test for collection property isSystem, now that issue https://github.com/triAGENS/ArangoDB/issues/395 is resolved
Uncommented test for collection property isSystem, now that issue https://github.com/triAGENS/ArangoDB/issues/395 is resolved

Signed-off-by: Frank Mayer <86a8c2da8527a1c6978bdca6d7986fe14ae147fe@frankmayer.net>

cesarsmaniotto/arangodb-php,cesarsmaniotto/arangodb-php,frankmayer/ArangoDB-PHP,diabl0/arangodb-php,diabl0/arangodb-php,frankmayer/ArangoDB-PHP,arangodb/arangodb-php,arangodb/arangodb-php