fixed regression introduced by #643. Non-logo favicon is now properly

referenced (absolute url, not relative)

src/webserver.js

@@ -90,7 +90,7 @@ var path = require('path'),
 					description: meta.config.description || '',
 					'brand:logo': meta.config['brand:logo'] || '',
 					'brand:logo:display': meta.config['brand:logo']?'':'hide',
-					'brand:favicon': meta.config['brand:favicon'] || nconf.get('relative_path') + 'favicon.ico',
+					'brand:favicon': meta.config['brand:favicon'] || nconf.get('relative_path') + '/favicon.ico',
 					browserTitle: meta.config.title || 'NodeBB',
 					csrf: options.res.locals.csrf_token,
 					relative_path: nconf.get('relative_path'),