Remove workaround (#1438)

* remove workaround class from html

* remove workaround class from css

public/css/main.css

@@ -74,7 +74,6 @@ body {
     position: relative;
     z-index: 2;
 }
-.no-center > center { display: none; }
 
 .header .container {
     position: relative;

templates/layouts/partials/base.jet.html

@@ -49,7 +49,7 @@
   <nav id="header" class="header {{ block contclass() }}{{end}}">
     {{block menu()}}{{end}}
   </nav>
-  <div id="content" class="{{ block contclass() }}{{end}}{{if isset(Infos["system"])}} no-center{{end}}">
+  <div id="content" class="{{ block contclass() }}{{end}}">
     <div class="content container center">
       {{ yield infos()}}
       {{ yield errors()}}