resource local path bugfix
Removes warnings in LocalRepo class.
Remove unused class RDFGraph,
IN/OUT/Knowledge graphs in DPUInstance set as comments.
Remove package commons-app.event.wrapper (2 classes)
Add comments to RDFFormatType
Rename from ETLEvent to DPUEvent.
Delete unused interface Disableable
Remove interface ETLPipeline.
Repair classes Pipeline,PipelineEvent.
Remove Runnable interface from PipelineExecution.
PipelineWorker call run method from PipelineExecution.
Java version for modules changed do 1.7
Formating classes Engine, PipelineWorker.
Move Engine to backend, synchronize with class PipelineWorker
Remove unused private method createRdfRepository in PipelineExecution.
Move Pipeline events to backend, rename package.
Merge branch 'master' of https://github.com/mff-uk/intlib.git
Not using PipelineEvent in Pipeline class
Merge branch 'master' of github.com:mff-uk/intlib into virtuoso

Conflicts:
	commons-app/src/main/java/cz/cuni/xrg/intlib/commons/app/pipeline/Pipeline.java