Dashboard README update

[aga11313]

• add image resources
• update deployment instructions
• align features descriptions with current state of the codebase

TODO:

• add a gif for the new Hub view (@BastinJafari is working on this)

[codecov[bot]]

Codecov Report

Merging #172 (8766872) into master (4de19bf) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #172   +/-   ##
=======================================
  Coverage   24.94%   24.94%           
=======================================
  Files         142      142           
  Lines        2806     2806           
  Branches      452      452           
=======================================
  Hits          700      700           
  Misses       2106     2106           

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[lusloher]

I added some more changes :) but really nice