Document NodeJs support in create flow

[Preeticp]

Screenshots will need to be updated.

[Preeticp]

Fixed the create flow for nodejs via #489
To Do: Fix the nodejs flow for Che, build and pipelines section

[Preeticp]

TTD:

UG: Node Js

App name is different in different places will need to redo most images to get that consistent
7.3
step 1 , name preeticp
7.5 check if step 2 diag changes for node js
7.6 step 2 remove name
8.2 check if confirmation screenshot is required if not delete.
8.3 step 3 change screenshot, check for step 4 instructions and screenshot
8.4 Step 1 and step 3 update
8.5 remove last screenshot