Display https as repo clone indicator and prevent modification of web_protocol variable.

Rewrite build_url, use web_protocol for repo indicator.

Explicitly initialize custom port to make the logic obvious.

config/initializers/1_settings.rb

@@ -31,15 +31,17 @@ class Settings < Settingslogic
     end
 
     def build_url
-      raw_url = self.web_protocol
-      raw_url << "://"
-      raw_url << web_host
-
       if web_custom_port?
-        raw_url << ":#{web_port}"
+        custom_port = ":#{web_port}"
+      else
+        custom_port = nil
       end
-
-      raw_url
+      [
+        web_protocol,
+        "://",
+        web_host,
+        custom_port
+      ].join('')
     end
 
     def ssh_port