Merge pull request #54 from ridoo/master

merge rc6 development stuff
[maven-release-plugin] prepare for next development iteration
Merge pull request #55 from ridoo/master

merge release contributions and prepare to next development iteration
do minor code sophistications to gain more robustness (findbugs plugin)
huge quality control commit including new license header and 3rd party license aggragation
Merge branch '52n_develop'
Merge remote-tracking branch '52n/develop'
add THIRD-PARTY ftl-formatting
harmonize license names
add filter for station
use System.arraycopy as GWT does not emulate clone() or Array.copyOf()
add missing license header
update doc
update licenses (remove JAI)
add license file
add license file closes #56
Merge remote-tracking branch 'origin/master'
pass noData value as null to client
add rendering hints
fix nullpointer in output