made compression configurable, fixes #38

lib/Configuration.php

@@ -56,6 +56,7 @@ class Configuration
             'cspheader'                => 'default-src \'none\'; manifest-src \'self\'; connect-src *; script-src \'self\' \'unsafe-eval\'; style-src \'self\'; font-src \'self\'; img-src \'self\' data: blob:; media-src blob:; object-src blob:; Referrer-Policy: \'no-referrer\'; sandbox allow-same-origin allow-scripts allow-forms allow-popups allow-modals',
             'zerobincompatibility'     => false,
             'httpwarning'              => true,
+            'compression'              => 'zlib',
         ),
         'expire' => array(
             'default' => '1week',

lib/Controller.php

@@ -387,6 +387,7 @@ class Controller
         $page->assign('URLSHORTENER', $this->_conf->getKey('urlshortener'));
         $page->assign('QRCODE', $this->_conf->getKey('qrcode'));
         $page->assign('HTTPWARNING', $this->_conf->getKey('httpwarning'));
+        $page->assign('COMPRESSION', $this->_conf->getKey('compression'));
         $page->draw($this->_conf->getKey('template'));
     }