postgresql_db: add args lc_collate, lc_ctype

Allow the specification of additional locale settings (lc_collate and lc_ctype) when creating a new database (state=present).

Fail if the specified database already exists with different locale/encoding settings. (These settings can't be changed for existing databases as far as I know, and failing seems better than suggesting that no change was necessary by returning changed=False)
Extend authorized_keys module for use with alternate AuthorizedKeysFile configurations
Fixed to the lineinfile module.
Added the backrefs parameter to the lineinfile module.
Added tests for the backrefs functionality of the lineinfile module.
Added additional lineinfile documentation.
A little more unit testing.
replaced && by || 

In the example, you want /bin/true to be executed if the first command has an error return code. Combining command with && will run the second only if the first is successful. Combining them with ||, the second will be run only of the first fails, what is wanted here.
now ssh connection plugin will only pass user as an option to ssh if it is
differnt from the current user. This should enable overrides for user in
.ssh/config w/o breaking any current functionality.

Signed-off-by: Brian Coca <briancoca+dev@gmail.com>
terminate immediately on a failure
compare the number of available hosts before and after running each task
Fixed option validation error

Fixed error on validation that block javascript documentation generation.
Merge pull request #2527 from mavimo/patch-1

Docs generator: fixed option (type) validation error
Merge pull request #2514 from raphinou/patch-1

replaced && by ||
Show other way to ignore command/shell errors
Merge branch 'lineinfile' of git://github.com/Tinche/ansible into lif
Fixed error in version_added

SSIA
Suppressed output and updated documentation
Double quoted version_added in documentation
Examples must use "name" parameter instead of "guest" for virt module, both works though but code explicitly expects name as the guest VM identifier.
Chnge description as list inside string
Initial commit of rax library

This library provides functionality for the Rackspace Public Cloud by
way of the official pyrax SDK (https://github.com/rackspace/pyrax). At
this time only the cloudservers service is functional. Instances can be
created or deleted. Idempotency is provided on matching instances with
the same name, flavor, image, and metadata values within a given
region.

pyrax usage does require a credentials file written out to hold username
and API key.  See pyrax documentation for details
(https://github.com/rackspace/pyrax/blob/master/docs/pyrax_doc.md)
Initial commit of rax inventory plugin

The rax inventory plugin provides a way to discovery inventory in the
Rackspace Public Cloud by way of pyrax, the official SDK. Grouping will
be done if a group:name is found in the instance metadata. When a single
host is queried all the instance details are returned with a rax_
prefix.

Because inventory plugins cannot take extra arguments, ENV variables
must be set to point to the pyrax compatible credentials file and the
region to query against.