Added a link to release notes in about:brave

[luixxiul]

Old title: Add the release notes of the same version as the browser to about:brave #6130 (comment)

Test Plan

#7791 (comment)

1. Open about:brave
2. Should contain Browse faster and safer with Brave. below About Brave
3. Should have a new section Release Notes
4. Clicking on hyperlink should open GitHub release page

Original issue description

Expected behavior:
Add the release notes of the same version as the browser to about:brave. The release notes and release date which are specified in updater.js could be reused in some way.

• Platform (Win7, 8, 10? macOS? Linux distro?): macOS

• Brave Version: master branch

[luixxiul]

CC @bradleyrichter for comments on design of the about page. Have you designed one already?

[bsclifton]

I like this; my ideal design (personal opinion) would be:

• Nice high-res Brave logo next to the "About Brave" 🦁
• Version information on top (below that)
• Release notes below that

Some of the other information I've considered showing here (maybe a collapsed area which is expandable):

• what command line params was Brave launched with?
• video card information
• other info that may be useful for troubleshooting

[bradleyrichter]

Logo would be nice...

[luixxiul]

I was trying to load https://github.com/brave/browser-laptop/blob/master/app/extensions/brave/img/braveAbout.png in the brave.js and it seems that it does not let me use <img src=''>.. Is there any way instead of it?

[bsclifton]

@luixxiul because this image is inside the Brave extension itself, loading it is not straight-forward. You'll want to look at an example on the Payments UI for how to load internal images (ex: the CoinBase logo)

Trying to load the image above fails because of the content security policy