fixes #680
also relevant: #682

bugfix: e2e non atlas volumes
chore: misc fixes

* chore: added origin dataset for cortical layers
bugfix: pinned datasets (#608)
bugfix: fixed counter of regional features
chore: moved region/DSPrev action btns to banner
chore: removed unused imports
ui: styling of collapse btn from accent to basic

* chore: fixed unit tests

* chore: added unit test for fav dtaset to prevent regression

* feat: reworked atlas selector

* bugfix: maptoproperty

* [skip ci] add spec files

* fix failed test

* fix tests

chore: minor refactor

chore: streamlined dataset action btns

fixes #502

chore: added toggle axis in user doc
chore: updated big brain origin dataset
bugfix: encode uri for dataset preview

chore: use constant for aria labels

chore: reworked how fixedmousecontexualcontainer works
chore added unit and e2e for fixedMouseCxt
tweak: by default layerbrowser is now collapsed
tweak: reduced region name in ctx menu
chore: removed unused import

chore: auto gen images