emoji: Change fallback emojiset for text emojiset.

Now that we have added back support for `google-blob` emojiset,
changing the fallback emojiset for `text` emojiset to `google-blob`
make sense.

frontend_tests/node_tests/emoji.js

@@ -56,8 +56,8 @@ run_test('initialize', () => {
     emoji.initialize();
     assert(image_stub);
     assert.equal(calls, 2);
-    assert.deepEqual(urls, ['/static/generated/emoji/sheet-google-64.png',
-                            '/static/generated/emoji/images-google-64/1f419.png']);
+    assert.deepEqual(urls, ['/static/generated/emoji/sheet-google-blob-64.png',
+                            '/static/generated/emoji/images-google-blob-64/1f419.png']);
 });
 
 run_test('get_canonical_name', () => {

static/js/emoji.js

@@ -91,7 +91,7 @@ exports.initialize = function initialize() {
         // for displaying emojis in emoji picker and composebox
         // typeahead. This logic ensures that we do sprite sheet
         // prefetching for that case.
-        emojiset = 'google';
+        emojiset = 'google-blob';
     }
     // Load the sprite image and octopus image in the background, so
     // that the browser will cache it for later use.

zerver/tests/test_home.py

@@ -872,5 +872,5 @@ class HomeTest(ZulipTestCase):
         self.assertEqual(result.status_code, 200)
 
         html = result.content.decode('utf-8')
-        self.assertIn('google-sprite.css', html)
+        self.assertIn('google-blob-sprite.css', html)
         self.assertNotIn('text-sprite.css', html)

zerver/views/home.py

@@ -272,7 +272,7 @@ def home_real(request: HttpRequest) -> HttpResponse:
         # GOOGLE_EMOJISET for picking which spritesheet's CSS to
         # include (and thus how to display emojis in the emoji picker
         # and composebox typeahead).
-        emojiset = UserProfile.GOOGLE_EMOJISET
+        emojiset = UserProfile.GOOGLE_BLOB_EMOJISET
     response = render(request, 'zerver/app/index.html',
                       context={'user_profile': user_profile,
                                'emojiset': emojiset,