Leonid,
Java server face is typically not a removable component and we normally hide it from the dashboard, so you should not have been able to remove it in the first place. Do you remember removing something named “JavaServer Faces Support for MyEclipse”?
In the top level MyEclipse menu, with a project selected, do you see the Project Capabilities > Add JSF Capabilities action? If you bring up the context menu on a jspx file, do you see the “MyEclipse Visual JSF Designer” option under the Open With menu?
A quick fix would be to remove “ICEFaces Support for MyEclipse” feature from the dashboard, apply the change and then restart, then add it again followed by restart. JavaServer faces will not appear in the dashboard, but the required plugins will be installed.
Can you tell me how you installed MyEclipse 8.5? Did you use the offline installer, web installer or Pulse Explorer to install it? Or perhaps you updated from MyEclipse 8.0?