Logging config and libs clean up for KIE Server

Description of problem:
KIE Server (BRMS exec. server) is not logging properly when running on Tomcat. The WEB-INF/lib dir is missing slf4j-jdk14, the bridge that would delegate the logging calls to JUL (logging impl in Tomcat). There is also commons-logging inside the WEB-INF/lib, this one should be removed as we are using jcl-over-slf4j.

Other WARs (ee6, ee7) may not be impacted, but that needs to be investigated.

Version-Release number of selected component (if applicable):
6.1.0.ER5 (and current 6.2.0-SNAPSHOTs)

How reproducible:
Always

Steps to Reproduce:
1. Deploy -webc.war into Tomcat.
2. See log, where SLF4j complains that it can't find any logging impl and defaulting to NOP (no logging message printed)

Actual results:
No logging messages from KIE Server.

Expected results:
All specified logging message from KIE Server printed, according to configuration in container.

Additional info:
Workaround is to add slf4j-jdk14 into WEB-INF/lib manually.