CORE: dependencies for social media

## Ready State: Yes

This pull request is related to the following JIRA tickets: 

https://imagex.atlassian.net/browse/LDC-109
https://imagex.atlassian.net/browse/LDC-112
https://imagex.atlassian.net/browse/LDC-113
https://imagex.atlassian.net/browse/LDC-111
https://imagex.atlassian.net/browse/LDC-110

## Requirements & Dependencies

* requires
imagex_addthis
imagex_answers_addthis
imagex_blog_addthis
imagex_events_addthis
imagex_faq_addthis
magex_group_addthis
imagex_news_addthis
imagex_page_addthis
imagex_poll_addthis
imagex_wiki_addthis

## Deployment Instructions

* Merge code.

## Usage/Test Instructions

* ensure addthis field exists for faq content type when this new feature is enabled.