Replace stdout printing with SLF4J logging in reasoners
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Key: STANBOL-253
URL: https://issues.apache.org/jira/browse/STANBOL-253
Project: Stanbol
Issue Type: Task
Reporter: Alessandro Adamou
Priority: Minor
Modules in reasoners have multiple calls to System.out, System.err and
Exception.printStackTrace()
Replace with SLF4J logs.
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