PDI-10921: Failures in simple mappings do not cause the parent transformation to fail

There are fix and unit tests.
PDI-9555 - Webservice via /kettle/executeTrans - Pass output to servlet
option: getServletPrintWriter does not respect UTF-8 encoding

What was done:
1) added new variable KETTLE_DEFAULT_SERVLET_ENCODING
2) changed the way PrintWriter for servlet output is instantionated.
3) changed the way Trans creates servletPrintWriter
PDI-10877 - Table input step returns no data when pulling a timestamp
column from IBM Netezza

junit tests added
PDI-10877 - Table input step returns no data when pulling a timestamp
column from IBM Netezza

Fix provided
PDI-10451: Move compression to engine, add Snappy, remove HadoopCompression, and fix UI
Merge pull request #348 from mattyb149/PDI-10451

PDI-10451: Move compression to engine, add Snappy, and fix UI
[PDI-8738] User defined Java Class Step treats the Info stream as an Input stream
PDI-8871 Get data from XML: Can't close error dialog
PDI-6637, PDI-11341 - unit test - ODS files are wrongly imported
PDI-6637, PDI-11341 - fix - ODS files are wrongly imported
Merge pull request #273 from dbahdano/PDI-8871

PDI-8871 Get data from XML: Can't close error dialog Can not get fields
Merge pull request #350 from stepanovdg/PDI-8738

[PDI-8738] User defined Java Class Step treats the Info stream as an Input stream
PDI-11319 - fix - IfNull step 'Set empty string' forward incompatibility
PDI-11319 - unit test - IfNull step 'Set empty string' forward incompatibility
Merge pull request #285 from TatsianaKasiankova/PDI-10921

PDI-10921: Failures in simple mappings do not cause the parent transform...
Merge pull request #267 from prakapenka/PDI-10877

PDI-10877 - Table input step returns no data when pulling a timestamp column from IBM Netezza.
[PDI-8786] User Defined Java Class Step : "Unable to open dialog for this step"
Fix checkstyle violations
Merge pull request #359 from pavel-sakun/fix-checktyle-violations

Fix checkstyle violations
Merge pull request #354 from dbahdano/PDI-6637

PDI-6637, PDI-11341 Open Office ods files wrongly imported