Merge pull request #41 from ipa-fxm-db/new_features

bring experimental_branch to latest version
added newline to rosbridge_parameters.txt
added parameter lookup to rosbridge_tcp.py, modules where those are used, and default parameters to launch file; internal default-values still get used when launch-file does not provide them; internal defaults can be changed within rosbridge_tcp.py
Merge pull request #42 from ipa-fxm-db/experimental_branch

tcp server now uses parameters from parameter server (via launchfile) or commandline