Use better name mappings for channels on about:brave

[bbondy]

Test plan

1. Visit about:brave using a production release
2. Channel should say Release
3. Visit about:brave using a beta release
4. Channel should say Beta
5. If translations are available, try the above steps after changing language

Original issue description

We should map the following identifiers in about:brave to the real channel name:

This will avoid people using the confusing internal names to refer to the channels.

dev -> Release
beta -> Beta
developer -> Developer
nightly -> Nightly

[bsclifton]

@baoqchau would you be interested in this one? It would be pretty similar to the fix you did with #10047

We just need a mapping between the channel (ex: dev) and the human readable name (ex: Release) 😄

[prasanthp96]

hello @bsclifton! I am interested to work on this bug, if it is not taken yet, can I fix it ?

[baoqchau]

@prasanthp96 Go ahead. I am a little busy these days so I cannot take on this issue.

[bsclifton]

@prasanthp96 that would be great! 😄 Please do work on it (I'll reserve it for you by assigning myself). Let me know if you have any questions 😄

[bsclifton]

@prasanthp96 have you had a chance to check this one out yet? Let me know how it's going 😄

[prasanthp96]

Hy @bsclifton , sorry for the delay, I will start working on this today.

[prasanthp96]

@bsclifton I could see only three channels listed in https://github.com/brave/browser-laptop/blob/master/app/channel.js. Will it suffice changing these alone ? or should I alter any other code?

[bsclifton]

@prasanthp96 I'd say let's move forward with just dev and beta for now 😄 We will be adding support for the other two very soon and stable isn't used (we can ignore it for now).

Once you have the mapping in place, it should be easy to adjust once we have the new channels (developer, nightly) added 😄

[prasanthp96]

@bsclifton I have sent an PR, have a look!