FEATURE: Remove more PII during user anonymizing

Removes
  * invite if the user was invited
  * email tokens
  * incoming emails
  * email log entries
  * raw emails from posts

spec/services/user_anonymizer_spec.rb

@@ -23,7 +23,9 @@ describe UserAnonymizer do
   end
 
   describe "make_anonymous" do
-    let(:user) { Fabricate(:user, username: "edward") }
+    let(:original_email) { "edward@example.net" }
+    let(:user) { Fabricate(:user, username: "edward", email: original_email) }
+    let(:another_user) { Fabricate(:evil_trout) }
     subject(:make_anonymous) { described_class.make_anonymous(user, admin) }
 
     it "changes username" do
@@ -201,6 +203,49 @@ describe UserAnonymizer do
       expect(user.api_key).to eq(nil)
     end
 
+    it "removes invites" do
+      Fabricate(:invite, user: user)
+      Fabricate(:invite, user: another_user)
+
+      expect { make_anonymous }.to change { Invite.count }.by(-1)
+      expect(Invite.where(user_id: user.id).count).to eq(0)
+    end
+
+    it "removes email tokens" do
+      Fabricate(:email_token, user: user)
+      Fabricate(:email_token, user: another_user)
+
+      expect { make_anonymous }.to change { EmailToken.count }.by(-1)
+      expect(EmailToken.where(user_id: user.id).count).to eq(0)
+    end
+
+    it "removes email log entries" do
+      Fabricate(:email_log, user: user)
+      Fabricate(:email_log, user: another_user)
+
+      expect { make_anonymous }.to change { EmailLog.count }.by(-1)
+      expect(EmailLog.where(user_id: user.id).count).to eq(0)
+    end
+
+    it "removes incoming emails" do
+      Fabricate(:incoming_email, user: user, from_address: user.email)
+      Fabricate(:incoming_email, from_address: user.email, error: "Some error")
+      Fabricate(:incoming_email, user: another_user, from_address: another_user.email)
+
+      expect { make_anonymous }.to change { IncomingEmail.count }.by(-2)
+      expect(IncomingEmail.where(user_id: user.id).count).to eq(0)
+      expect(IncomingEmail.where(from_address: original_email).count).to eq(0)
+    end
+
+    it "removes raw email from posts" do
+      post1 = Fabricate(:post, user: user, via_email: true, raw_email: "raw email from user")
+      post2 = Fabricate(:post, user: another_user, via_email: true, raw_email: "raw email from another user")
+
+      make_anonymous
+
+      expect(post1.reload).to have_attributes(via_email: true, raw_email: nil)
+      expect(post2.reload).to have_attributes(via_email: true, raw_email: "raw email from another user")
+    end
   end
 
   describe "anonymize_ip" do