Revert "web: Shorten container image names"

This won't make much senes for the broader audience. Might make
sense during demos and such.

This reverts commit d205abdd0e57be3b41811b337d3f4e5820293449.

Reviewed-by: Patrick Uiterwijk <puiterwijk@redhat.com>
web: A basic container commit to image dialog

This doesn't have validation yet, and doesn't support all options
but enough to show the concept and get started.

Closes #409