ace: styles tweak

public/app/core/components/code_editor/code_editor.ts

@@ -94,7 +94,7 @@ function link(scope, elem, attrs) {
   // disable depreacation warning
   codeEditor.$blockScrolling = Infinity;
   // Padding hacks
-  codeEditor.renderer.setScrollMargin(15, 15);
+  codeEditor.renderer.setScrollMargin(10, 11);
   codeEditor.renderer.setPadding(10);
 
   setThemeMode(theme);

public/sass/components/_code_editor.scss

@@ -8,6 +8,9 @@
     @include font-family-monospace();
     font-size: 1rem;
     min-height: 2.60rem;
+
+    @include border-radius($input-border-radius-sm);
+    border: $input-btn-border-width solid $input-border-color;
   }
 }