BF [ 1874419 ] JDBC Statement not close in a finally block
BF [ 2041456 ] Don't use Env.getCtx in base project
* added cache support (MPPProductBOM.get())
* refactored a lot of code
* removed static and pseudo-static methods and properties (like getLines, getLowLevel)
* removed deprecated and not used code (too much code to maintain)
* better exception handling support