Merge branch 'disable-single-radio' into 'master'

feat(ui): can now disable a single radio in a group

See merge request pubsweet/pubsweet!414

packages/ui/src/atoms/Radio.js

 import React from 'react'
-import styled from 'styled-components'
+import styled, { css } from 'styled-components'
 import { th, override } from '@pubsweet/ui-toolkit'
 
 const Label = styled.span`
+  ${props =>
+    props.disabled &&
+    css`
+      cursor: not-allowed;
+    `};
+
   ${override('ui.Label')};
   ${override('ui.Radio.Label')};
 `
@@ -41,7 +47,7 @@ const Radio = ({
       type="radio"
       value={value}
     />
-    <Label checked={checked} color={color}>
+    <Label checked={checked} color={color} disabled={disabled}>
       {label}
     </Label>
   </Root>

packages/ui/src/molecules/RadioGroup.js

@@ -28,7 +28,7 @@ class RadioGroup extends React.Component {
             checked={option.value === value}
             className={className}
             color={option.color}
-            disabled={disabled}
+            disabled={disabled || option.disabled}
             inline={inline}
             key={option.value}
             label={option.label}