Migration to convert pending membership requests for active members

[ejucovy]

Find them by code like:

for mem in app.openplans.portal_memberdata.keys():
  if not IHandleMemberWorkflow(app.openplans.portal_memberdata[mem]).is_unconfirmed():
    if IAnnotations(app.openplans.portal_memberdata[mem]).get("opencore.member.pending_requests", {}).items():
      print mem, IAnnotations(app.openplans.portal_memberdata[mem]).get("opencore.member.pending_requests", {}).items() 

[ejucovy]

Some corner cases would need to be handled:

• User is now a member of the project!
• Project no longer exists!