Also, fixed styling of "info" dropdown.

Merge branch '274-dev-login-page-advanced' of ssh://gitlab.iscpif.fr:20022/gargantext/purescript-gargantext into dev-merge

Now backend is set to Nothing before showing (it could be set to Just b
when clicking on "Login" in Home).

Merge branch '288-dev-folders-for-all-sessions' of ssh://gitlab.iscpif.fr:20022/gargantext/purescript-gargantext into dev-merge

Merge branch '286-dev-css-fix-for-graph-height' of ssh://gitlab.iscpif.fr:20022/gargantext/purescript-gargantext into dev-merge

For other pages, tree needs space on the left.

Merge branch 'feature/toestand-global-state' of ssh://gitlab.iscpif.fr:20022/gargantext/purescript-gargantext into dev-merge

Also, make components for the panelAction case expression.

Merge branch 'feature/toestand-global-state' of ssh://gitlab.iscpif.fr:20022/gargantext/purescript-gargantext into feature/toestand-global-state