Commit #33

+ build #006

CmdJob:
  * changed info(JustJobsPlugin, CommandSender, String[])
Job:
  * changed loadData()
Node:
  + added removeAll(String)
  + added removeAll(String, List<T>)
Tree:
  + added removeAll(String)
JobsManager:
  * changed remove(String)
  * changed getJobs()