Improve account section terminology and labels

[yugalkaushik]

Fixes #3505

Changes:

• Changed MenubarItem label from "Settings" to "My Account"
• Updated AccountView page title and heading to use "My Account"
• Renamed "Save All Settings" button to "Save Account Details"
  
  

I have verified that this pull request:

• has no linting errors (npm run lint)
• has no test errors (npm run test)
• is from a uniquely-named feature branch and is up to date with the develop branch.
• is descriptively named and links to an issue number, i.e. Fixes #123

[raclim]

This looks great to me—I really appreciate the additional details you included! Thanks so much for your work on this!

I think some next steps would be to address the translation updates that would need to happen here. Feel free to go ahead with opening an issue for it!

One quick note for future contributions: it’d be great if you could leave a comment on any issues you plan to work on, just to help avoid duplicate efforts from other contributors!

[yugalkaushik]

@raclim Noted.