[abnermolina]

• Replaces npm run install-all, which no longer exists, with npm install --allow-git=all. npm 12 blocks git dependencies by default, and the client depends on where-is-it from GitHub, so plain npm install fails with EALLOWGIT.
• Fixes the dev server URL to http://localhost:3000, not 8080.

Came up when Logan was setting up the web version of the client.