* feat: fetch features and store locally for offline users
* feat: handle success and error cases
* refactor: move offline activation code reading/validation to snjs
* chore: update after renaming snjs function
* fix: correct condition for checking offline users
* feat: let users remove their previous offline keys (WIP)
* refactor: handle setOfflineFeatures function response accordingly
* feat: remove corresponding local data when removing offline key
* fix: use snjs' confirm dialog instead of custom one
* feat: show warning before installing extension from untrusted source
* refactor: move functions for validating external feature url and checking if custom server host was used to snjs
* chore: put correct snjs version
* chore: make `eslint-plugin-react-hooks` in yarn.lock to match the `develop` branch
* chore: deps update
* chore: deps update
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