Sentry, Serilog

1.0.5 (#11)

* add webvisor

* remove ya metrica in dev env

* disable calc button if there is only one person

* remove unused code

* add tests

* #6 fix backend error

* fix #6

* #10 add healthcheck

* add production config, please close #10

* fix healtcheck

* add serilog and sentry, #9, #8; webvison 2;

* update release version for Sentry

* update manifest.json for mobile version

* close #9; close #8;