Merge pull request #133 from lukashaertel/master

Master pull request after merge
Replacing old Angular-only front end with the react-powered one
Fixed things
Corrected server port
Added SLD Logging into database
Merge pull request #135 from cEhlen/master

Added SLD Logging into database. done #120
Local variable refactoring
Local variable refactoring
Changed HAR freq. to 1/sec. Upadted URLs and version in gradle and pom
Merge remote-tracking branch 'upstream/master'
Added roll to feature vector