merging trunk changes with IIS-CDH-5.3.0 branch
#1197 introducing job.properties changes aligning paths to rumcajs cluster HDFS structure
creating IIS-CDH-5.3.0 branch
#1133 dropping useless workfing_dir creation for pig nodes
updating job.properties
#118 deleting output at prepare phase
#118 removing obsolete website usage subworkflows
#118 renaming communities_builder to community_builder
#118 introducing community to similarity hive transformer
#118 introducing madis based communities generation for website usage analysis