Update dependencies

[samuelmeuli]

Q	A
Fixed Issues?	No
Patch: Bug Fix?	No
Minor: New Feature?	No
Major: Breaking Change?	Yes
Tests Added + Pass?	No
Documentation Provided	No
Any Dependency Changes?	Yes
License	Apache License, Version 2.0

• Updated Node.js (to latest LTS release) and NPM
• React: Updated all dependencies, updated deprecated createBrowserHistory import
• Angular: Updated all dependencies (including Angular from v6.1 to v8), removed @angular/platform-server from devDependencies (duplicate), removed invalid "preserveSymlinks" key from dev server config