React 17+ compatibility

New Issue Checklist

• I am not disclosing a vulnerability.
• I am not just asking a question.
• I have searched through existing issues.
• I can reproduce the issue with the latest versions of Parse Server and Parse Dashboard.

Issue Description

We are currently using a few React features that are deprecated. If we want to upgrade to the next major React version we need to refactor the affected code.

Steps to reproduce

• Look for componentWillReceiveProps, componentWillUpdate and componentWillMount methods in the code.
• Look for contextTypes property in the code.
• Look for findDOMNode method invocations used for ref-like behavior.

Actual Outcome

Deprecated features are still in use.

Expected Outcome

No deprecated features are used.

Environment

n/a

Dashboard

• Parse Dashboard version: n/a
• Browser (Safari, Chrome, Firefox, Edge, etc.): n/a
• Browser version: n/a

Server

• Parse Server version: n/a
• Operating system: n/a
• Local or remote host (AWS, Azure, Google Cloud, Heroku, Digital Ocean, etc): n/a

Database

• System (MongoDB or Postgres): n/a
• Database version: n/a
• Local or remote host (MongoDB Atlas, mLab, AWS, Azure, Google Cloud, etc): n/a

Logs

Search the dashboard code for componentWillReceiveProps, componentWillUpdate, componentWillMount, contextTypes, and findDOMNode, as listed in the issue. Inspect each affected component and its existing usage before choosing the refactor scope. Done means the deprecated features are no longer used and the dashboard remains compatible with React 17+.