Fix the width of select2-container, to fix NextGen compatibility issue

Fixes #416
More specific CSS selector
Fix position of CSS line
Changing width to 350px for mobile compatibility
Merge pull request #417 from x-team/nextgen-compability

Fix the width of select2-container, to fix NextGen compatibility issue
Eliminate WP_CLI short-circuit

Stream needs to be more thoughtful with regards to how it behaves when WP-CLI is activated. With this short-circuit in place, plugin activation was prevented via WP-CLI:

> PHP Fatal error:  Class 'WP_Stream_Admin' not found in /srv/www/wordpress-develop/src/wp-content/plugins/stream/includes/install.php on line 83
Use WP_CLI::warning() for admin notices in WP_Stream
Allow for author=0 (WP-CLI) to be queried
Attribute anonymous WP-CLI actions, and tag WP-CLI actions done by a user
Makes the Generate new key link ajaxified
Merge branch 'develop' into issue-420

Conflicts:
	includes/feeds.php
Fix broken feeds
Add instructions to flush rewrite rules on Private Feeds setting
Merge pull request #421 from x-team/issue-420

Makes the Generate new key link ajaxified
Use self_admin_url where possible

This replaces `is_network_admin() ? network_admin_url() : admin_url();`.
Include WP-CLI (user=0) in filter selects
Merge branch 'develop' into wp-cli

Conflicts:
	stream.php
Delete new DB version after uninstall
Only show uninstall message when a database_message is supplied
Refactor for WPCS master rules