Woocommerce-ios: Server Side: Change New Order push notification body for improved localization

[mindgraffiti]

Describe the bug
Ref. #620, Item 5.

1. "%1$s placed a %2$s order from %3$s"
   Issue: when the person placeholder is replaced with "someone", it can be translated differently. In the case of Japanese, username takes "さん (san)" (something similar to a title like Miss or Mr) AFTER the name, such as "Naoko san". But if "san" is added to "someone", it doesn't sound good.

Solution: Something like this works across languages if the verb changes depending on the object's sex: "%2$s order from %3$s (user: %2$s)". Also, it's ideal if a separate sentence such as "%2$s order from %3$s (user: unknown)" is set up. The last part about the unknown user may not be necessary in this case.

We use Someone instead of a username or First name Last Name because our push notification messages are affected by GDPR, and referring to Someone keeps us compliant.

This task requires changes to server-side code for push notifications. cc: @kyleaparker - is "$20.00 order from Bananza World" too terse?

To Reproduce
Steps to reproduce the behavior:

1. On your store, make a new order.
2. On your test device, check the Notifications tab for the New Order notification.
3. The body of the push notification says "Someone placed a {order total} from {store name}"

Screenshots
This is what our current new order notification UI looks like:

Expected behavior
To improve internationalization, consider making the string more generic: "{order total} order from {store name}"

Isolating the problem (mark completed items with an [x]):

• [x] I have deactivated other plugins and confirmed this bug occurs when only WooCommerce plugin is active.
• [x] This bug happens with a default WordPress theme active, or Storefront.
• [x] I can reproduce this bug consistently using the steps above.

Mobile Environment
Please include:

• Device:
• iOS version:
• WooCommerce iOS version:

WordPress Environment

Copy and paste the system status report from **WooCommerce > System Status** in WordPress admin.

[kyleaparker]

How about something like: "New Order for $20 on Bananza World"

[mindgraffiti]

Phabricator review D25207 is pending

Masterbar notifications before server-side changes:

Masterbar notif after changes: