Animated toasts

This PR rework the main toasts to hide them smoothly.

This allows to follow the remaining once easier.

This have to be rebased and merged on top of !456 (merged)

The following GIF is slow cause of the record, the UI is smooth.

It sounds like there is constrains with both redux and react-bootstrap.

• The toast have to be stored locally, else Redux to not provide them any more during the animation
• Anyway the data is there, it sounds like react-bootstrap destroy the component after 0.5s (which constrains the duration of the animation)