Use ERAS for all user stats in YourStats component

[goplayoutside3]

Package

app-project
lib-classifier

Linked Issue and/or Talk Post

Closes: #6400
Closes: #5964
Closes: #5134

Describe your changes

• Remove activity_count everywhere in FEM so user stats are no longer using /project_preferences for calculating classification count.
• Untangle the spaghetti code of UPP > YourStats MST files.
• Add a disposer function with autorun to Store.js so that UserPersonalization refreshes every time the project id changes. This ensures the YourStats component displays correct stats data if you keep the same tab open and switch between FEM projects.

How to Review

• View any project's classify page and YourStats total classification count should match the total classification count displayed on your stats and homepage.
• When you make a classification, the YourStats component should increment as expected.
• See more comments below about removing legacy code.

Checklist

PR Creator - Please cater the checklist to fit the review needed for your code changes.
PR Reviewer - Use the checklist during your review. Each point should be checkmarked or discussed before PR approval.

General

• Tests are passing locally and on Github
• Documentation is up to date and changelog has been updated if appropriate
• You can yarn panic && yarn bootstrap or docker-compose up --build and FEM works as expected
• FEM works in all major desktop browsers: Firefox, Chrome, Edge, Safari (Use Browserstack account as needed)

General UX

Example Staging Project: i-fancy-cats

• All pages of a FEM project load: Home Page, Classify Page, and About Pages
• Can submit a classification
• Can sign-in and sign-out

Bug Fix

• The PR creator has listed user actions to use when testing if bug is fixed
• The bug is fixed
• Unit tests are added or updated

Refactoring

• The PR creator has described the reason for refactoring
• The refactored component(s) continue to work as expected

[coveralls]

coverage: 77.786% (+0.02%) from 77.764%
when pulling ffde57d on UPP-clean-up
into f58b7ba on master.