change(button): basic button is again without padding, border and bac…

…kground

- Although this is wrong and Volto should have used the basic icon params
  in order to have this rule, there are too many places where this is used
  as such so in order to preserve backward compatibility I am returning this
  css rule

theme/themes/eea/elements/button.overrides

@@ -26,17 +26,17 @@
   }
 }
 
-//.ui.basic.button {
-//  padding: 0;
-//  border: 0;
-//  background: transparent;
-//  cursor: pointer;
-//  text-align: initial;
-//
-//  &:focus {
-//    outline: none;
-//  }
-//}
+.ui.basic.button {
+  padding: 0;
+  border: 0;
+  background: transparent;
+  cursor: pointer;
+  text-align: initial;
+
+  &:focus {
+    outline: none;
+  }
+}
 
 .ui.basic.primary.button,
 .ui.basic.secondary.button {
@@ -92,6 +92,7 @@
 // bg or border
 .ui.basic.icon.button {
   box-shadow: none !important;
+  padding: 0;
 }
 
 // toolbar yes and cancel icons go outside the button area with default line