Remove references to keybase and switch to Matrix

[w0000000t]

Except dao.bond.bondedRoleType.ROCKET_CHAT_ADMIN which refers to an
unused role, every other instance of keybase has been contextually
updated to Matrix (bisq.chat); functions to display moderator name
and profile address on keybase have been updated to work with Matrix
usernames and urls.

Fixes #replaceWithIssueNr, fixes #replaceWithIssueNr

Your PR description here.

[ghost]

Good initiative! A couple of comments:

• you should only commit changes to the maindisplayStrings.properties; the translated ones are updated automatically by transifex
• pazza in class DisputeAgentLookupMap should be changed to pazza83

[w0000000t]

Good initiative! A couple of comments:

• you should only commit changes to the maindisplayStrings.properties; the translated ones are updated automatically by transifex
• pazza in class DisputeAgentLookupMap should be changed to pazza83

thanks for the comments!
I suspected as much regarding the translations... did them anyway as, if updated automatically, they are overwritten anyway... regarding pazza I already changed it to pazza83 in the code, or is there another reference to their username elsewhere? Cannot find it by searching in Idea

[ghost]

ok I missed that you already got that pazza83 name change. 👍
p.s. Its usually the case that @ripcurlx asks for the translated files not to be included.

[w0000000t]

Ouch, I do hope he doesn't ask me to adjust it, because I definitely can, but then I couldn't for the life of me squash the commits together even if he was so incredibly kind to show me in my previous PR

[ghost]

1. [copy back the original versions of the translated resources]
2. git status to double-check what files you'll be modifying
3. git add *
4. git commit -m"fix"
5. git rebase -i HEAD~2
6. [in editor that pops up, change the second commit command from pick to fixup]
7. git commit --amend -S
8. git push --force origin
9. have a 🍺

[w0000000t]

Saving this nice writeup for later use! Nice little abstract, thanks!

[w0000000t]

I think I've done it @jmacxx ! Had to mess with the access token thingamajig but it appears to have worked!

[ripcurlx]

utACK - Code changes are looking fine 👍

[ripcurlx]

@w0000000t But your account is not properly signed 😅

[w0000000t]

@w0000000t But your account is not properly signed 😅

...I know what happened.
This PR was signed with my previous email, and I have since then removed that emaill from github in favor of a new one, which I managed to get to sign correctly. I thought the signed status of this PR would have stayed, but it didn't apparently as I was royally wrong.
Dang, I'll try and amend it using my new working signature, more practice for me 😅

[w0000000t]

@ripcurlx please confirm I didn't make a complete mess, it appears signed now and I should have squashed all commits now, maybe?

[ripcurlx]

utACK - Changes are looking fine 👍