Minor context menu visual updates

app/components/ContextMenu/MenuItem.js

@@ -85,7 +85,7 @@ export const MenuAnchor = styled.a`
   user-select: none;
 
   svg:not(:last-child) {
-    margin-right: 8px;
+    margin-right: 4px;
   }
 
   svg {

app/components/ContextMenu/index.js

@@ -60,8 +60,8 @@ const Background = styled.div`
   background: ${(props) => rgba(props.theme.menuBackground, 0.95)};
   border: ${(props) =>
     props.theme.menuBorder ? `1px solid ${props.theme.menuBorder}` : "none"};
-  border-radius: 2px;
-  padding: 0.5em 0;
+  border-radius: 6px;
+  padding: 6px 0;
   min-width: 180px;
   overflow: hidden;
   overflow-y: auto;