Updated to new module template format.
remove leftover ABNF description from initial RainerScript idea

Long replaced left-over from the initial design phase years ago.
rainerscript: remove old cruft
Merge pull request #33 from rgerhards/v5-stable-remove-rs-abnf

V5 stable remove rs abnf
Resolved merge conflicts merging v5-stable to v7-stable.
Resolved conflict and merged v7-stable.
Merge branch 'master' of https://github.com/rsyslog/rsyslog-doc