eliminate notifications for offline/online status

[longrunningprocess]

Fixes #1571

Description

This PR seeks to quiet down the LF notification system when detecting online/offline status.

Type of Change

Only keep lines below that describe this change, then delete the rest.

• Bug fix (non-breaking change which fixes an issue)

Screenshots

Without the notifications:

Screen.Recording.2022-10-31.at.12.57.26.PM.mov

Checklist

• I have performed a self-review of my own code
• I have reviewed the title/description of this PR which will be used as the squashed PR commit message
• I have commented my code, particularly in hard-to-understand areas
• I have added tests that prove my fix is effective or that my feature works

How to test

• Go offline (via your wifi or dev tools->Network->Offline) and ensure the top app bar changes colors and the header title shows "Offline"

qa.languageforge.org testing

Testers should add his/her findings to end of the PR in a comment and include screenshots, files, etc that are beneficial.

[github-actions]

Unit Test Results

368 tests   368 ✔️  14s ⏱️
  38 suites      0 💤
    1 files        0 ❌

Results for commit 518845d.

♻️ This comment has been updated with latest results.

[longrunningprocess]

If we don't want to go quickly with this, I can also add commits for whatever a final solution might look like including the removal of the https://github.com/hubspot/offline dep as well as migration to the modern approach: https://developer.mozilla.org/en-US/docs/Web/API/Navigator/onLine#Specification

[megahirt]

LGTM I would like to go fast on this, and just delete those sections outright, not just comment out.

[longrunningprocess]

LGTM I would like to go fast on this, and just delete those sections outright, not just comment out.

I'm with you, I'd like to get this back in Erika's hands ASAP

[megahirt]

TESTED

I observe that no notifications are created when simulating going on/off line. The header still has the offline text and color change as expected.