Show an animated image while fetching package details (size & version)
instead of the static text "Fetching..." (but fallback into that if there
was any problem loading the image).
The animated gif was taken from yast2-theme-openSUSE-2.21.18, which is GPLv2+
Merge pull request #58 from antlarr/master

Show a loop animation while fetching package details (size & version)