UI-tests und fixes aus tests

public/css/style.css

@@ -495,7 +495,8 @@ body.detail-image-fs-open { overflow: hidden; }
 /* Editor */
 #editor-body { tab-size: 4; resize: none; }
 #editor-body:focus { outline: none; }
-#editor-gutter div { padding-right: 2px; box-sizing: border-box; }
+#editor-gutter::-webkit-scrollbar { display: none; }
+#editor-gutter > div { padding-right: 2px; box-sizing: border-box; }
 .gutter-active { color: var(--t-accent) !important; font-weight: 700; background: var(--t-raised); }
 
 /* Search */