feat: improved update experience

[hacdias]

• Closes "Check for Updates.." menu item gives no feedback #1378
• Partially addresses Suggestion: Display information about new features when update is available #1210 ( we show a button to check release notes )

This improves the experience while updating. Here are two dialog screenshots and please review the code for more copy.

Note: Electron's logo is replaced by IPFS Desktop's in production.

User Journey

• User clicked 'Check for Updates'
  • If available, receives dialog (with close and read release notes buttons).
  • If not available, receives dialog (with close and read release notes buttons).
  • If error, receives dialog telling to check the Internet connection.
  • Update downloaded, receives dialog with button to restart IPFS Desktop.
• Auto updater found an update (every 12 hours)
  • If available, nothing, downloads in background.
  • If not available, nothing happens.
  • If error, gets logged internally.
  • Update downloaded, receives a notification they can click to install the update.

[jessicaschilling]

@hacdias

If not available, receives dialog (with close and read release notes buttons).

Do we really need the release notes if the message is "you're already on the latest version"?

[jessicaschilling]

Tiny language tweaks plus one question - thanks!

[hacdias]

Do we really need the release notes if the message is "you're already on the latest version"?

Probably not, will remove.

Tiny language tweaks plus one question - thanks!

Thank you!

[hacdias]

@jessicaschilling removed!