Update team.html to use contributors.json instead of committers.py
https://bugs.webkit.org/show_bug.cgi?id=114720

Reviewed by Ryosuke Niwa.

Updating the team.html to use contributors.json. Also removing the unused field 'area'
from the contributors information.

* team.html:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@148591 268f45cc-cd09-0410-ab3c-d52691b4dbfc