save experiment report to XML
Merge branch 'master' of github.com:choreos/choreos_v-v

Conflicts:
	scalability_explorer/src/main/java/eu/choreos/vv/data/convertion/xml/ExperimentReportXML.java
	scalability_explorer/src/main/java/eu/choreos/vv/data/convertion/xml/ReportDataXML.java
	scalability_explorer/src/main/java/eu/choreos/vv/data/convertion/xml/XMLConverter.java