random traffic generator

added traffic generator in the traffic update simulator
status page without post

removed post submission for status info. uses ajax call now
bug fix in current flow ant

cloning of current flow ant in execution of ant itself caused huge
amount of processes (400k+). moved this to the resource (node holon)
disregard of bb_e in link_holon

bb_e will not be taken into account at the moment. current flow and bb_b
are sufficient