-minor code cleanup, indentation, doxygen

git-svn-id: https://gnunet.org/svn/gnunet@33798 140774ce-b5e7-0310-ab8b-a85725594a96
-add support for 'update_inbound_delay' to HTTP client, complete plugin monitoring implementation

git-svn-id: https://gnunet.org/svn/gnunet@33799 140774ce-b5e7-0310-ab8b-a85725594a96