Don't abort the migration if the simulation fails

We think aborting the migration will generate more headaches to system
administrators, who will have to manually check and fix every invalid
record before anything can be migrated.

spec/lib/tasks/globalize_spec.rb

@@ -11,7 +11,6 @@ describe "Globalize tasks" do
     end
 
     let :run_rake_task do
-      Rake::Task["globalize:simulate_migrate_data"].reenable
       Rake::Task["globalize:migrate_data"].reenable
       Rake.application.invoke_task "globalize:migrate_data"
     end
@@ -134,14 +133,16 @@ describe "Globalize tasks" do
         end
       end
 
-      it "simulates the task and aborts without creating any translations" do
+      it "ignores invalid data and migrates valid data" do
         expect(valid_process).to be_valid
         expect(invalid_process).not_to be_valid
 
-        expect { run_rake_task }.to raise_exception("Simulation failed!")
+        run_rake_task
 
-        expect(Legislation::Process::Translation.count).to eq 0
+        expect(valid_process.translations.count).to eq 1
         expect(valid_process.reload.title).to eq "Title"
+
+        expect(invalid_process.translations.count).to eq 0
         expect(invalid_process.reload.title).to eq ""
       end
     end