feature/ImageX Files feature

## Ready State: (Yes)

This pull request is related to the following JIRA tickets: [LDC-173 Add the media modules and standard media config](https://imagex.atlassian.net/browse/LDC-173).

## Requirements & Dependencies

* no new dependencies

## Deployment Instructions

* Merge code.
* Enable module `imagex_files`: `drush pm-enable imagex_files`
* Clear caches with `drush cache-clear all`

## Usage/Test Instructions

* This feature should contain all file related settings
* Currently it only enables the media_crop view mode and sets file formatters for all image view modes to just show images. (but this last part is flakey as its constantly set to overridden)