New Features: * fkie_node_manager: the start with different ROS_MASTER_URI
sets now the ROS_HOSTNAME environment variable if a new masteruri was selected to start node_manager or master_discovery
Fixes: * fkie_node_manager: fixed print XML content in echo_dialog * fkie_node_manager: avoids the print of an error, while loads a wrongs file on start of the node_manager * fkie_node_manager: fixed check of running remote roscore * fkie_node_manager: fixed problem while echo topics on remote hosts * fkie_node_manager: changed cursor position in XML editor after open node configuration * fkie_node_manager: fixed replay of topics with array elements * fkie_node_manager: fixed close process while start/stop nodes * fkie_node_manager: fixed namespace of capability groups, fixed the missing leading SEP * fkie_node_manager: fixed - avoid transmition of some included/changed but not needed files to remote host * fkie_node_manager: fixed start node after a binary was selected from multiple binaries * fkie_node_manager: removed "'now' FIX" while publish messages to topics * fkie_node_manager: fixed log format on remote hosts * master_discovery: fixed avg. network load calculation, added checks for some parameters * fkie_multimaster: Set correct logging level to warning * Contributors: Alexander Tiderko, Gary Servin