* Create oc.js

* Add OC to locale list

* Add OC

* Add OC to list

* Update spacedeck.html

* Update root.js

Allow embedding of folders and access to folders to anonymous editors with edit_hash/spaceAuth links (#63)

* add subspaces to be listed with edit_hash/spaceAuth authorization

* remove dead code from api_helpers.js

* add edit_hash authorization for requested space thumbnails

* handle /s/:hash links in frontend router

* set space_auth via a function, allow passing it to load_space

* rename variable in /s/:hash router in backend

* hide search, profile, breadcrumb in folders if not logged in, construct links to subspaces differently for anonymous editors

security: prevent leak of creator information in space responses; ensure home folder id is set when creating space

fix error handling and displaying on membership PUT and DELETE; don't allow to change your own role; require at least one admin

Spacedeck 6.0 CI WIP; more style, UX cleanups; fix account dialog; add more color swatches; new landing page

fix session token/cookie handling for arbitrary server IPs; fix realtime update distribution via websockets

* The MongoDB/Mongoose data storage is removed in favor of Sequelize. This abstracts over SQLite or RDBMs like PostgreSQL and MSSQL. The default is SQLite, which significantly simplifies deployments in end-user environments.

* As Spacedeck now has no more mandatory server dependencies, we can wrap it in Electron and ship it as a desktop application.

* Removes docker-compose.yml

* First version of import UI