[NEW] Guess a user's name from SAML credentials

[mrsimpson]

What this adds

When authenticated using SAML, users get a username but not a (full) name. That has a couple of nasty side effects since name is expected to be available for authenticated users.
This PR adds a determination to the user registration via SAML.

How it's done

The username is split by non-word-characters (e. g. the very common .) and each resulting word is capitalized.

We've been running this for a long time on our branch and did only experience positive effects ;)

Fixes #15236

[Hudell]

What's with the tap-i18n files?

[mrsimpson]

What's with the tap-i18n files?

@Hudell hmpf - I did not even notice them committed. I’ll remove them once I get back to my computer.
Thanks for notifying!

Just saw this since the latest release: to me it looks as if those are artifacts which should actually be ignored. Maybe @sampaiodiego can clarify about it.

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[Hudell]

We're using rocketchat:tap-i18n now, it's the same package as before but including a few changes. Maybe you still have references to tap-i18n on your fork?

[mrsimpson]

@Hudell jup, I know. Don't understand how this was commited though. Rebased to the current develop and committed only the one changed file.

[mrsimpson]

@sampaiodiego thanks for adapting and merging. I had this on my list for this week, but ...

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[sampaiodiego]

No worries @mrsimpson .. I'm preping things for 2.1 release this week, so I did this simple change to include this into the release =)