Added new setting to toggle tracking of member sources (#15705)

refs https://github.com/TryGhost/Team/issues/2168

- the new setting allows site owners to control if they want to track
the sources for new member signups and subscriptions
- its switched on by default, but can be toggled off from new analytics
settings page

ghost/core/core/server/api/endpoints/utils/serializers/input/settings.js

@@ -48,6 +48,7 @@ const EDITABLE_SETTINGS = [
     'mailgun_base_url',
     'email_track_opens',
     'email_track_clicks',
+    'members_track_sources',
     'amp',
     'amp_gtag_id',
     'slack_url',

ghost/core/core/server/data/migrations/versions/5.21/2022-10-27-09-50-add-member-track-source-setting.js

@@ -0,0 +1,8 @@
+const {addSetting} = require('../../utils');
+
+module.exports = addSetting({
+    key: 'members_track_sources',
+    value: 'true',
+    type: 'boolean',
+    group: 'members'
+});

ghost/core/core/server/data/schema/default-settings/default-settings.json

@@ -295,6 +295,14 @@
         "members_yearly_price_id": {
             "defaultValue": null,
             "type": "string"
+        },
+        "members_track_sources": {
+            "defaultValue": "true",
+            "validations": {
+                "isEmpty": false,
+                "isIn": [["true", "false"]]
+            },
+            "type": "boolean"
         }
     },
     "portal": {

ghost/core/test/unit/server/data/exporter/index.test.js

@@ -234,7 +234,7 @@ describe('Exporter', function () {
 
             // NOTE: if default settings changed either modify the settings keys blocklist or increase allowedKeysLength
             //       This is a reminder to think about the importer/exporter scenarios ;)
-            const allowedKeysLength = 71;
+            const allowedKeysLength = 72;
             totalKeysLength.should.eql(SETTING_KEYS_BLOCKLIST.length + allowedKeysLength);
         });
     });

ghost/core/test/unit/server/data/schema/integrity.test.js

@@ -37,7 +37,7 @@ describe('DB version integrity', function () {
     // Only these variables should need updating
     const currentSchemaHash = 'bb48c3c754f74f02a6ce020af6b0e6a7';
     const currentFixturesHash = 'dcb7ba7c66b4b98d6c26a722985e756a';
-    const currentSettingsHash = '2978a5684a2d5fcf089f61f5d368a0c0';
+    const currentSettingsHash = 'aa0014a3b9fd9e69a1402fb1b5d4210b';
     const currentRoutesHash = '3d180d52c663d173a6be791ef411ed01';
 
     // If this test is failing, then it is likely a change has been made that requires a DB version bump,