Add two new methods to CyNetworkTableManager to assist app developers:
getTableType, which returns the target type of a table (CyNode, CyEdge,
or CyNetwork), and getTableNamespace, which returns the table namespace.

Change-Id: I8e5e00ad9939e118a6079251fae6d231c6ff0592
More tunable cleanup

Change-Id: I0bc400e8358cd5caf62dd250e3b8d7814656fd7c