* call out pluggable drivers in task drivers section and link/add info to plugin stanza

* fix hyphenation

* removing page and nav that tells users drivers are not pluggable

* show new syntax for configuring raw_exec plugin on client

* enabled option value for raw_exec is boolean

* add plugin options section and mark client options as soon to be deprecated

* fix typos

* add plugin options for rkt task drivers and place deprecation warning in client options

* add some plugin options with plugin configuration example + mark client options as soon to be deprecated

* modify deprecation warning

* replace colon with - for options

* add docker plugin options

* update links within docker task driver to point to plugin options

* fix typo and clarify config options for lxc task driver

* replace raw_exec plugin syntax example with docker example

* create external section

* restructure lxc docs and add backward incompatibility warning
...