Add checkbox disabled style (#798)

* Add checkbox disabled style

* Change checkbox disabled color.

* Fix autocomplete test.

client/src/core-components/checkbox.js

@@ -67,11 +67,16 @@ class CheckBox extends React.Component {
     }
 
     getClass() {
+        const {
+            className,
+            disabled
+        } = this.props;
         let classes = {
             'checkbox': true,
             'checkbox_checked': this.getValue(),
+            'checkbox_disabled': disabled,
 
-            [this.props.className]: (this.props.className)
+            [className]: (className)
         };
 
         return classNames(classes);

client/src/core-components/checkbox.scss

@@ -10,7 +10,7 @@
     }
 
     &__icon {
-        color: $light-grey;
+        color: $medium-grey;
         outline: none;
 
         &:focus {
@@ -31,4 +31,14 @@
             }
         }
     }
+
+    &_disabled {
+        .checkbox__icon {
+            color: $light-grey;
+
+            &:focus {
+                color: $light-grey;
+            }
+        }
+    }
 }