CORE: QA updates

* Permissions removed from base module into imagex_news_permissions
* workbench and scheduler moved from base module into
imagex_news_workflow
* READMEs updated for base and extension  classes
MISC: fixed headers , added bullets, updated features version
MISC: updated extension definitions
MISC: removed dependency on user_roles_permissions (no longer exists)
MISC: text change to match standard
CORE: updated to match new README standards for descriptions, and ImageX Components
Merge pull request #9 from emmairwin/news_qa

CORE: QA updates