Installed keboola/csv by @keboola

https://github.com/keboola/php-csv
Installed a CSV download and JSON responses for the users list view
Added icon macro
Added download CSV button
Extended Response facade to add Response::csv
Added more admin users
Paginated the users list
Updated pagination view for twbs 3.0
Moved temp storage location into storeage_path and fix bug with removing the file on complete
Merge branch 'refs/heads/csv-downloads'

Conflicts:
	app/controllers/admin/UserController.php
	app/macros/html.php