Improved backrefs example in lineinfile.

Preliminary ability to use Jinja2 {{ }} to replace ${foo.bar} in playbooks.  Can't use both at the same time per line.

Typo in cloudformation module documentation.

postgresql_user: fix docstrings

Change documentation of "state" param to refer to user (role) state instead of
database state.

Change 2 function docstrings to reflect the code

Use aptitude safe-upgrade for apt upgrade=yes

Use aptitude safe-upgrade instead of apt-get upgrade to implement
apt: upgrade=yes. Using aptitude ensures that missing dependencies
will also be installed.

Fixes #2540

Vagrant module - fixed version_added

Suppressed output and updated documentation

Double quoted version_added in documentation

Examples must use "name" parameter instead of "guest" for virt module, b...

Chnge description as list inside string

Examples must use "name" parameter instead of "guest" for virt module, both works though but code explicitly expects name as the guest VM identifier.

SSIA

replaced && by || 

Docs generator: fixed option (type) validation error

Fixed error on validation that block javascript documentation generation.

add better OS detection for BDM

Add some examples for local_action and rsync

Install example config file under /etc/ansible

fixed and extended documentation for lvg module

Place ad-hoc stuff from docs under context