Merge pull request #73 from p1tz/master

add debugging
update commons-io version
Merge branch 'master' of https://github.com/arago/rike.git
Update ActivityLog.java

change getJsonData()
change setJsonData
Update ActivityLogHelper.java
change getter und setter methods, remove "_"
change getter und setter methods, remove "_"
change getter und setter methods, remove "_"
change getter und setter methods, remove "_"
add column prop for "last_ms"
add access to impl dependant binary data