Get/save all images from websites

Outstanding features:
* Download options
- Download images as Zip file
- Download images as single files

* Filter images by:
- Size: min size, max size in units (Bytes, KB, MB)
- Width: min width, max width
- Height: min height, max height
- Name: starts with, ends with, contains given name by user
- Domain: the host the images come from

* View options:
- Images as grid (preview mode)
- Image URLs as text list