Restore lost PHP demos
Restore lost PHP demos

Through some terrible accident in 5f16ceb550d575cd0ea4143ed0d7e0d1e4f0be66
the "Other widgets" section has been replaced with a duplicate of the
"Field layouts" section.

Change-Id: Iddf6adf6de903624edbddec36be154ea0fe7f2f6

wikimedia/oojs-ui,wikimedia/oojs-ui,wikimedia/oojs-ui,wikimedia/oojs-ui