bugfix: restrict size of regionTagsContainer

feat: first prototype of proxy fetching nifti

feat: on hover segment show status
bugfix: on parcellation switch segments not selected

This is required to cater for bigbrain jubrain regions

bugfix: user added lm are correctly scaled

chore: clean up code, rename to clarify

chore: use bootstrap native classes and remove unused css classes

refactor: atlasviewer template

bugfix: do not show useDefaultList in flatTreeList

chore: remove unused vars

feat: unauthenticated user will look at release only data

chore: restore clear all selected regions

bugfix: top level flattree does not collapse (#117)
chore: chevron wrong orientation
chore: restore reset region selected
chore: reordered template parcellation selected

you are right daviti, there needs to be a delay when creating
views in lifecycle hooks. but I will be damned if we need to use
setTimeout, and I'd rather use rxjs observable

chore: relayout