Changed H1 and page title on batch and product screens (#416)

Changed 'Which batch was used?' to 'Which batch was it?' (consistent
with the retrospective journey)

And added 'product' to the H1 for editing the product. So the H1 is now:
Which ((vaccination type)) vaccine product was it?

Author: Anna-Sutton

app/views/records/batch.html

@@ -1,6 +1,6 @@
 {% extends 'layout.html' %}
 
-{% set pageName = "Which batch was used? – Records" %}
+{% set pageName = "Which batch was it? – Records" %}
 
 {% set currentSection = "records" %}
 
@@ -23,7 +23,7 @@
             "name": "batchNumber",
             "fieldset": {
               "legend": {
-                "text": ("Which batch was used?" if vaccination.vaccinationToday == 'yes' else "Which batch was used?"),
+                "text": "Which batch was it?",
                 "classes": "nhsuk-fieldset__legend--l",
                 "isPageHeading": true
               }

app/views/records/choose-product.html

@@ -23,7 +23,7 @@
           name: "vaccineProduct",
           fieldset: {
             legend: {
-              text: "Which " + vaccination.vaccine + " vaccine did you give?",
+              text: "Which " + vaccination.vaccine + " vaccine product was it?",
               classes: "nhsuk-fieldset__legend--l",
               isPageHeading: true
             }