pb:

[NicoKiaru]

• [x] b&c
• [x] avoid showing the image (make it ui-less)
• [x] default colors
• [x] use global cache instead of diskcachedcellimg
• [x] atlas not downloading
• [x] Download deepslice model on demand
• [ ] Use task service for downloading task bar

[NicoKiaru]

Global cache instead of disk cached: done in https://github.com/BIOP/bigdataviewer-biop-tools/commit/d437a89374ab1e344449df56d63bb1bfb7ac5513

[NicoKiaru]

Use task service for downloading task bar : won't do. Too annoying

default colors and b &c : use sources tab instead

[NicoKiaru]

The atlas is downloading but there's no progress bar : to mention to bg atlas