build: upgrade dependencies and version number (#61)

- Upgrade dependencies to latest versions (and fix breaking changes)
- Upgrade extension verison to 2.1.6

build: version 2.1.5 (#57)

- Update build version to 2.1.5
- Updated webpack to 5.97.1

test: add unit tests for (#54)

- Add unit tests for models and all of background-scripts package
- Made code more testable by relying more on promises
- Fixed bugs found while performing testing.

fix: unit test because of version change

fix: added link to userguide

build: version bump

build: bumped minor version

build: version bump

build: version bump

fix: import data issue (#41)

* Fixed bug where import data does not correctly provide site data when
  importing data. This is caused by the incorrect function being called
  when acquiring site data from IndexedDB Non-Volatile Storage DOM.

* Bumped up version

* Increased margin of domains in see-sites