read i_clamp_min and i_clamp_max form parameter server - if available
harmonize pid names for rosparam and dynamic_reconfigure
Merge pull request #29 from ipa-fxm/issue28_iclamp_reconfigure

fix issue #28: i_clamp/i_clamp_min/i_clamp_max reconfigure inconsistency
Merge pull request #30 from ipa-fxm/harmonize_reconfigure_pid

Harmonize reconfigure pid