add reduction techniques

..._processing/filter/reduction/AbstractReductionFilter.java

...z/live_trace_processing/filter/reduction/DummyFilter.java

...lter/reduction/evaluation/ad_hoc/FragmentationFilter.java

...ng/filter/reduction/evaluation/ad_hoc/SamplingFilter.java

...aluation/language_based/RemoveNonPublicMethodsFilter.java

...uction/evaluation/language_based/RemovePackageFilter.java

.../reduction/evaluation/metrics_based/StackDepthFilter.java

...n/evaluation/summarization/MonotoneSubsequenceFilter.java

...reduction/language_based/AbstractLanguageBasedFilter.java

...er/reduction/language_based/RemoveConstructorsFilter.java

...duction/language_based/RemoveGettersAndSettersFilter.java

...g/filter/reduction/summarization/AssociativityFilter.java

...trace_processing/filter/reduction/summarization/Edge.java

...ssing/filter/reduction/summarization/IterationFilter.java

...r/reduction/summarization/PatternSummarizationFilter.java

...lter/reduction/summarization/TreeSummarizationFilter.java

...orviz/live_trace_processing/main/FilterConfiguration.java

..._processing/filter/reduction/AssociativityFilterTest.java

...race_processing/filter/reduction/IterationFilterTest.java

..._processing/filter/reduction/MonotoneSubsequenceTest.java