Purple Gold Pit Bull Terrier

Adds Drag and Drop Uploads and ability to delete image from files.

changes:

• adds drag and drop uploads, updates compresion count after ajax success 44fe9c6
• adds dropzonejs and ajax to delete images and update compression count 7d7992e
  adds dropzone js for drag and drop uploads 86da4ac
• adds new form for dropzone drag and drop uploads
  adds delete button to remove image d07358d
• adds new css for drag and drop uploads and delete animations ea863fb
• adds dropzone to registerAssets method eafb905
• adds template for dropzone file uploads d735463