Improve mobile error message and add retry logic

Summary

The error message shown on a failed request (as below on failed upvote) is not helpful to the user or developer.

Steps to reproduce

1. Lose connectivity.
2. Try upvote something.

Platform information

Cross-platform mobile.

App version

v3.12.0

What is the current bug behavior?

Generic error is shown to user.

What is the expected correct behavior?

should show an alert / modal to the user informing them of the error (voting could not be done). Also a retry button would be ideal.

Relevant logs and/or screenshots

Possible fixes

• Add specific error messages to retry failures
• Add a retry button for failed network requests (if possible without significant re-architecture)

/label ~"T - Bug" ~"S - Triage:new"