settings: Extract CUSTOM_LOGO_URL.

templates/zerver/portico.html

@@ -15,8 +15,8 @@
 <div class="header-main" id="top_navbar">
   <div class="column-left">
         <div>
-          {% if zulip_com %}
-          <a class="brand logo" href="/"><img src="/static/images/logo/zulip-dropbox.png" class="portico-logo" alt="Zulip" content="Zulip" /></a>
+          {% if custom_logo_url %}
+          <a class="brand logo" href="/"><img src="{{ custom_logo_url }}" class="portico-logo" alt="Zulip" content="Zulip" /></a>
           {% else %}
           <a class="brand logo" href="/"><img src="/static/images/logo/zulipcornerlogo@2x.png" class="portico-simple-logo" alt="Zulip" content="Zulip" /></a>
           {% endif %}

zerver/context_processors.py

@@ -12,6 +12,7 @@ def add_settings(request):
         # to the template
         'not_voyager':               not settings.VOYAGER,
         'zulip_com':                 settings.ZULIP_COM,
+        'custom_logo_url':           settings.CUSTOM_LOGO_URL,
         'register_link_disabled':    settings.REGISTER_LINK_DISABLED,
         'show_oss_announcement':     settings.SHOW_OSS_ANNOUNCEMENT,
         'zulip_admin':               settings.ZULIP_ADMINISTRATOR,

zproject/local_settings.py

@@ -31,6 +31,7 @@ ZULIP_FRIENDS_LIST_ID = '84b2f3da6b'
 SHARE_THE_LOVE = True
 SHOW_OSS_ANNOUNCEMENT = True
 REGISTER_LINK_DISABLED = True
+CUSTOM_LOGO_URL = "/static/images/logo/zulip-dropbox.png"
 
 # This can be filled in automatically from the database, maybe
 DEPLOYMENT_ROLE_NAME = 'zulip.com'

zproject/settings.py

@@ -148,6 +148,7 @@ DEFAULT_SETTINGS = {'TWITTER_CONSUMER_KEY': '',
                     'ZULIP_COM': False,
                     'SHOW_OSS_ANNOUNCEMENT': False,
                     'REGISTER_LINK_DISABLED': False,
+                    'CUSTOM_LOGO_URL': None,
                     'STATSD_HOST': '',
                     'OPEN_REALM_CREATION': False,
                     'REMOTE_POSTGRES_HOST': '',