integrations: Rename social media logos to bypass Adblock Plus.

Adblock Plus's "Block social media icons tracking" setting blocked
integration logos for social media platforms from loading, so the logos
are renamed to bypass this.

Fixes zulip#11590.

zerver/lib/integrations.py

@@ -457,6 +457,8 @@ def __init__(self, name: str, *args: Any, **kwargs: Any) -> None:
         legacy=True
     ),
     'twitter': Integration('twitter', 'twitter', ['customer-support', 'marketing'],
+                           # _ needed to get around adblock plus
+                           logo='static/images/integrations/logos/twitte_r.svg',
                            doc='zerver/integrations/twitter.md'),
 }  # type: Dict[str, Integration]
 
@@ -476,12 +478,16 @@ def __init__(self, name: str, *args: Any, **kwargs: Any) -> None:
                      logo_alt='Dark Sky logo'),
     HubotIntegration('google-hangouts', ['communication'], display_name='Google Hangouts',
                      logo_alt='Google Hangouts logo'),
-    HubotIntegration('instagram', ['misc'], display_name='Instagram'),
+    HubotIntegration('instagram', ['misc'], display_name='Instagram',
+                     # _ needed to get around adblock plus
+                     logo='static/images/integrations/logos/instagra_m.svg'),
     HubotIntegration('mailchimp', ['communication', 'marketing'],
                      display_name='MailChimp'),
     HubotIntegration('google-translate', ['misc'],
                      display_name="Google Translate", logo_alt='Google Translate logo'),
-    HubotIntegration('youtube', ['misc'], display_name='YouTube'),
+    HubotIntegration('youtube', ['misc'], display_name='YouTube',
+                     # _ needed to get around adblock plus
+                     logo='static/images/integrations/logos/youtub_e.svg'),
 ]  # type: List[HubotIntegration]
 
 for hubot_integration in HUBOT_INTEGRATIONS: