Added support for un/archiving Prices

https://github.com/TryGhost/Team/issues/665

We update both Stripe and our database based on the `active` flag for
existing stripe prices.

ghost/members-api/lib/repositories/product/index.js

@@ -217,13 +217,19 @@ class ProductRepository {
                         interval: existingPrice.interval
                     }, options);
                 } else {
-                    await this._StripePrice.edit({
+                    const updated = await this._StripePrice.edit({
                         nickname: existingPrice.nickname,
-                        description: existingPrice.description
+                        description: existingPrice.description,
+                        active: existingPrice.active
                     }, {
                         ...options,
                         id: stripePrice.id
                     });
+
+                    await this._stripeAPIService.updatePrice(updated.get('stripe_price_id'), {
+                        nickname: updated.get('nickname'),
+                        active: updated.get('active')
+                    });
                 }
             }
 

ghost/members-api/lib/services/stripe-api/index.js

@@ -118,6 +118,24 @@ module.exports = class StripeAPIService {
         return price;
     }
 
+    /**
+     * @param {string} id
+     * @param {object} options
+     * @param {boolean} options.active
+     * @param {string} options.nickname
+     *
+     * @returns {Promise<IPrice>}
+     */
+    async updatePrice(id, options) {
+        await this._rateLimitBucket.throttle();
+        const price = await this._stripe.prices.update(id, {
+            active: options.active,
+            nickname: options.nickname
+        });
+
+        return price;
+    }
+
     /**
      * ensureProduct.
      *