bugfix: add retry for data init

chore: remove unused style
chore: moved bigbrain cyto map to default parcellation
chore: temporarily disabled viewer pref
chore: change preview file message from dialog to snackbar
chore: added some message for no preview file available
chore: allow undo for pinning/unpinning dataset
chore: moved pinned dataset fab from bottom right to top right
chore: typo Setting -> Settings
feat: minimified layer browser
chore: remoevd Esc remove extra layers