fix space-left with btn--text

app/assets/stylesheets/zammad.scss

@@ -539,6 +539,14 @@ pre code.hljs {
         color: hsl(0,0%,75%);
       }
     }
+
+    &.space-left {
+      margin-left: 0;
+    }
+
+    &.space-right {
+      margin-right: 0;
+    }
   }
 
   &.btn--quad {
@@ -8113,6 +8121,10 @@ body.fit {
   margin-left: 10px; 
 }
 
+.space-right {
+  margin-right: 10px; 
+}
+
 .align-center {
   margin-left: auto;
   margin-right: auto;