Fix feature fetch sane url

test: add test for annotation redirect

fix: saneurl, hover/context menu

maint: do not log ready endpoint

debug: add debug for plugin

staging release v2.13.0

maint: added js disabled page

refactor: port to python for backend

experimental: rework UI

feat: allow fsaverage grid toggle
feat: allow feature download
maint: surface face selection disabled

fix: state encoded annotations