* Configured VisualEditorSandbox to use es
* Reconfigured the ce demo to share the sandbox module
* Removed es demo
* Renamed ce demo to ve (es is broken anyways)
Patchset 2: squashed in https://gerrit.wikimedia.org/r/3953
Change-Id: If8d13bf7011616d222be78899b23186859d5ed70