* feat(face-landmarks): add face landmarks timeline

fixes after rebase

* fixes after rebase compiling and linting

* fix: change keyboard shorcut for participants stats

* fix: label for emotions switch

* fix: linting issues

* code review changes

* fix linting issues

* code review changes 2

* fix typo

As an intermediate step on the path to merging jitsi-meet and
jitsi-meet-react, import the whole source code of jitsi-meet-react as it
stands at
2f23d98424
i.e. the lastest master at the time of this import. No modifications are
applied to the imported source code in order to preserve a complete
snapshot of it in the repository of jitsi-meet and, thus, facilitate
comparison later on. Consequently, the source code of jitsi-meet and/or
jitsi-meet-react may not work. For example, jitsi-meet's jshint may be
unable to parse jitsi-meet-react's source code.