Merge branch 'issue-39-dedicated-benchmarks-directory' into 'master'

...va/theodolite/uc3/streamprocessing/util/StatsFactory.java

...cation/src/main/resources/META-INF/application.properties

...uc3-workload-generator/.settings/org.eclipse.jdt.ui.prefs

...ad-generator/.settings/qa.eclipse.plugin.checkstyle.prefs

...-workload-generator/.settings/qa.eclipse.plugin.pmd.prefs

benchmarks/uc3-workload-generator/Dockerfile

benchmarks/uc3-workload-generator/build.gradle

.../java/theodolite/uc3/workloadgenerator/LoadGenerator.java

...hmarks/uc4-application/.settings/org.eclipse.jdt.ui.prefs

...-application/.settings/qa.eclipse.plugin.checkstyle.prefs

...rks/uc4-application/.settings/qa.eclipse.plugin.pmd.prefs

benchmarks/uc4-application/Dockerfile

benchmarks/uc4-application/build.gradle

.../main/java/theodolite/uc4/application/HistoryService.java

...in/java/theodolite/uc4/streamprocessing/HourOfDayKey.java

.../theodolite/uc4/streamprocessing/HourOfDayKeyFactory.java

...va/theodolite/uc4/streamprocessing/HourOfDayKeySerde.java

...eodolite/uc4/streamprocessing/HourOfDayRecordFactory.java

...heodolite/uc4/streamprocessing/RecordDatabaseAdapter.java

...java/theodolite/uc4/streamprocessing/StatsKeyFactory.java