Core: Updates file_entity to latest alpha release 2.0-alpha3.

## Ready State: Yes

With file_entity, media, and the media add on modules, it's generally a good idea to keep them in lock step with each other as development usually happens in tandem and relies on each others specific releases. This updates file_entity to keep it consistent with https://github.com/imagex/imagex_media/pull/3

This pull request is related to the following JIRA tickets: - [ICS-7](https://imagex.atlassian.net/browse/ICS-7)

## Requirements & Dependencies

* None

## Deployment Instructions

* Merge code.
* Navigate to `imagex_installkit` profile: `cd profiles/imagex_installkit`
* Build `file_entity`: `drush make modules/imagex/modules/imagex_files/drupal-org.make ./ --working-copy --no-gitinfofile --no-core --no-cache --contrib-destination=./ --projects=file_entity -y`
* Update database: `drush updb`
* Clear caches with `drush cache-clear all`

## Usage/Test Instructions

* Ensure build works