Updated to new module template format.
added defaultNetstreamDriverCertFile to global()

This is the doc counterpart of: https://github.com/rsyslog/rsyslog/pull/45

Plus a few more words about those TLS options.
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
Added the formatting changes for templates.rst added by so14k
Merge branch 'v5-stable' into v7-stable
Merge branch 'v7-stable' into v8-stable
Merge branch 'patch-1' of https://github.com/radu-gheorghe/rsyslog-doc into radu-gheorghe-patch-1