Support Node 15 with NPM 7 with React v17.0

[vitaliyhayda]

On Node 15 with NPM 7 with React v17.0 there is the following error:

npm ERR! code ERESOLVE
npm ERR! ERESOLVE unable to resolve dependency tree
npm ERR! 
npm ERR! While resolving: ifexo-front@v0.5.8
npm ERR! Found: react@17.0.1
npm ERR! node_modules/react
npm ERR!   react@"17.0.1" from the root project
npm ERR! 
npm ERR! Could not resolve dependency:
npm ERR! peer react@"^16.0.0" from formsy-react@2.2.1
npm ERR! node_modules/formsy-react
npm ERR!   formsy-react@"2.2.1" from the root project
npm ERR! 
npm ERR! Fix the upstream dependency conflict, or retry

[rkuykendall]

This project has moved to formsy/formsy-react.