Remove hardcoded ports and test IP based agents, etc.

[2byrds]

• [x] Ronak will supply IP based agent
• [x] Remove health check validate
• [x] Add configurable boot url at a different port and adjust front-end depending on the boot url added.

[HunnySajid]

Closing as it is merged with https://github.com/WebOfTrust/signify-browser-extension/pull/152

Ronak and I were able to connect his AWS instance with extension.