eol: Updated the EoL info

Removed the "maintenance" branch, because 3.6 is nearing beta. Moved 3.5
to Stable and 3.6 to devel.

Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>
Split the big syslog-ng.org.widgets namespace

Maintaining the whole content in one single file was becoming far too
tedious, split it into smaller ones.

Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>