Update License File

[meysholdt]

Description

This change

• adds the AGPL license under the file name LICENSE.md so that GitHub will nicely show the correct license in the repo meta information.
• removes the MIT and Enterprise licenses, as they are no longer used.
• fixes a license header that uses the wrong license.
• Removes a misleading sentence from README.md

Related info:

• Announcement of the license change
• Switch license to AGPL #15241

Related Issue(s)

Fixes https://gitpod.slack.com/archives/C020VCB0U5A/p1670612777895959

How to test

Release Notes

NONE

Documentation

Werft options:

• /werft with-local-preview
  If enabled this will build install/preview
• /werft with-preview
• /werft with-large-vm
• /werft with-integration-tests=all
  Valid options are all, workspace, webapp, ide, jetbrains, vscode, ssh

[csweichel]

Renaming LICENSE.AGPL.md to LICENSE.md renders the license header mood. What's the motivation for renaming it?

[meysholdt]

Renaming LICENSE.AGPL.md to LICENSE.md renders the license header mood. What's the motivation for renaming it?

This change leaves License.AGPL.txt in place and fills it with the text Find the license text in LICENSE.md so that the license headers remain valid.

By storing the license in LICENSE.md rather than License.AGPL.txt we follow GitHub naming conventions and GitHub will render the license name nicely next to the repo instead of just showing View License.

Example for "View License"	Example for showing the license name

It would be nice to completely delete License.AGPL.txt but this would require changing all license headers.
Since some license headers still point to a slightly wrong file name (#13955 intended to fix that) I'd rather do one update of file headers than two.

[felladrin]

ℹ️ It's also possible to keep the current one ("License.txt"), as GitHub would still detect it correctly (as it parses the content). Here, for example, I've used "license.txt" and GitHub detected it correctly.