📦 atlas-experiment-table 💬 Add icon for Anndata experiments in the experiments list page

[ke4]

We have to add the Anndata icon to the title column if it is an Anndata experiment.

On our last Team meeting we decided to replace the Avenger-styled icon to a simple A with a capital A in red-ish background. The tooltip text should be: Experiment with annotated data analysed by an external source. In another ticket we are also going to modify it and add a link to a help page that giving more details on Anndata to the user.

[lingyun1010]

Remaining to do: Integrate the front-end component to single-cell web application