small api fixes

Bugfix Big Brain fully mapped region ID

bugfix: path in deploy/constant.js

* bugfix: authentication issues

* fix: saneUrl/index.spec.js

* bugfix: backend tests

* bugfix: backend tests

Move drag&drop to nehuba container

chore: fix waxholm v3 datasets

chore: disallow allen v3 root to be selected

chore: add place holder text

add color to highlited user landmark

feat: interactiveViewer.viewerHandle.mouseOverNehubaUI now allows ...
... customLandmarks enter/leave state to be monitored

... other than parc region

chore: use displayname || name for parccel

* feat: use region related components inherit randomized colour
bugfix: Explore btn text colour
chore: reworked threshold for triggering darkmode

* feat: reworked contributor name display

* chore: use short name for version selector

* chore: update help page info

* RF connectivity component

* fix lint

* fix: tests

* bugfix: on region deselect
bugfix: on parc change

bugfix: remove additional layers stop event prop
uifix: remove box shadow for version selection
chore: pointer-events css rule & stop prop arg type

bugfix: change parc should dismiss version menu
chore: minor ui tweaks: overlapping chips
chore: Explore btn now match style to region
chore: remove unused imports