fix: package.json to reduce vulnerabilities
fix: package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-MORGAN-72579
- https://snyk.io/vuln/npm:cryptiles:20180710
- https://snyk.io/vuln/npm:deep-extend:20180409
- https://snyk.io/vuln/npm:extend:20180424
- https://snyk.io/vuln/npm:react-dom:20180802
- https://snyk.io/vuln/npm:stringstream:20180511
- https://snyk.io/vuln/npm:ua-parser-js:20180227

Alek-S/pseudozen