CORE: imagex_socialmedia_addtoany

## Ready State: Yes

This pull request is related to the following JIRA tickets:   https://imagex.atlassian.net/browse/PUA-41

## Requirements & Dependencies

* This new module requires

* addtoany (>= 4.4)
* Features
* Ctools
* Strongarm

## Deployment Instructions

* Merge code.

## Usage/Test Instructions

* Add socialmedia_addtoany as a dependency 
* Ensure build correctly downloads addtoany module and enables it
* Ensure default configuration sets Page as the only CT
* Ensure default configuration has a single share