Bug fixes

Now with a rudimentary Global flag lists support. Please see the following issue for more info: #3085838: Global Flag Lists not working

Included is 8.x-1.0-beta5 plus:

• #3072819 fixed the handling of symlinked file directories
• rolled the Utils class into DeleteFiles
• PHP reformatted to something like the Drupal standard
• dependency injection instead of \Drupal calls
• added PHPDoc comment blocks
• README headings in uppercase
• #3072755 fix by Alona O'neill (alonaoneill) - module name capitalised
• #3072593 fix by Udit Rawat (uditrawat) - replaced $_SERVER & file_unmanaged_delete()

- changes to default CSS in case of using Media + fix masonry when multiple galleries

changes to default CSS in case of using Media + fix masonry when multiple galleries