FIXES PLT-6648 Add support for Server Side Encryption on S3 (#6467)

Help from Jason Blais on wording
Update storage_settings.jsx
Update en.json

model/config_test.go

@@ -24,3 +24,12 @@ func TestConfigDefaultEmailNotificationContentsType(t *testing.T) {
 		t.Fatal("EmailSettings.EmailNotificationContentsType should default to 'full'")
 	}
 }
+
+func TestConfigDefaultFileSettingsS3SSE(t *testing.T) {
+	c1 := Config{}
+	c1.SetDefaults()
+
+	if *c1.FileSettings.AmazonS3SSE != false {
+		t.Fatal("FileSettings.AmazonS3SSE should default to false")
+	}
+}