CHE-611 Cannot run a workspace from Dashboard

[skabashnyuk]

This is an autogenerated issue.
Original: https://jira.codenvycorp.com/browse/CHE-611
Reporter: Eugene Ivantsov
Description: Steps to reproduce.

1. Create a workspace in UD.
2. Click Open in IDE
3. A screen with startup steps is displayed. There are no logs though.
4. Console shows:

ERROR (org.eclipse.che.ide.preferences.PreferencesManagerImpl):
org.eclipse.che.ide.commons.exception.ServerDisconnectedException: undefined
at Unknown.Error(Unknown)
at Unknown.Ai(_app-0.js)
at Unknown.SB(_app-0.js)
at Unknown.yUa(_app-0.js)
at Unknown.xUa(_app-0.js)
at Unknown.ej(_app-0.js)
at Unknown.cj(_app-0.js)
at Unknown.eval(_app-0.js)
at Unknown.eval(_app-0.js)

The workspace may eventually start after quite a long time. Sometimes it fails.

[ddementieva]

Fixed by d98b7b9