For 2.5 we had this undocumented Alpha-grade devfile for use with an unofficial CRW intellij sidecar image:

https://github.com/redhat-developer/codeready-workspaces/tree/crw-2.6-rhel-8/dependencies/che-editor-intellij-community/devfiles

For 2.6, we're instead going to just use the upstream Che version, so we need to update yaml to point upstream.

• [Prod] devfile https://github.com/redhat-developer/codeready-workspaces/tree/crw-2.6-rhel-8/dependencies/che-editor-intellij-community/devfiles have to be rewritten to use http://quay.io/che-incubator/che-editor-intellij-community:latest
• [QE] Run a quick smoke test with CRW 2.6 using quay.io/che-incubator/che-editor-intellij-community:latest / https://github.com/che-incubator/jetbrains-editor-images to make sure nothing has broken since 2.5