move a civi class into wmf_civicrm

Change-Id: Id1496b5fde439005aff254f25b417040fd9050ac
deprecate Advanced Search "contacts and contributions" view

Nobody uses it, and it was an overpriced cheap hack to begin with.

Change-Id: I9ce48f5bde233720dc9fa16d91f35a7d6f016ee6