Merge pull request #1 from 52North/master

re-align
check for deleted tracks (on server). fixes #59

this is the case when a track is deleted on the server. it cannot be
removed from the aggregation. thus, the first 100 IDs do not match any
more. We have to check the aggregation API for the additional tracks.
Merge remote-tracking branch 'origin/master'

Conflicts:
	json/src/main/java/org/n52/supervisor/checks/json/EnviroCarAggregationChecker.java
Merge remote-tracking branch 'matthes/master'
minor adjustments