-run refresh_routes() asynchronously, as the recursion in #3152 looks suspicious

git-svn-id: https://gnunet.org/svn/gnunet@31031 140774ce-b5e7-0310-ab8b-a85725594a96
debug message


git-svn-id: https://gnunet.org/svn/gnunet@31032 140774ce-b5e7-0310-ab8b-a85725594a96
rename to match functionality


git-svn-id: https://gnunet.org/svn/gnunet@31033 140774ce-b5e7-0310-ab8b-a85725594a96