Remove deprecated features at React v15.5 (#1905)

* Remove deprecated features at React v15.5

- [x] React.PropTypes
- [x] react-addons-pure-render-mixin
- [x] react-addons-test-utils

* Uncommented out & Add browserify_rails options

* re-add react-addons-shallow

* Fix syntax error from resolve conflicts

* follow up 59a77923b3

app/assets/javascripts/components/features/compose/components/search.jsx

@@ -1,48 +1,43 @@
-import PureRenderMixin from 'react-addons-pure-render-mixin';
 import ImmutablePropTypes from 'react-immutable-proptypes';
+import PropTypes from 'prop-types';
 import { defineMessages, injectIntl, FormattedMessage } from 'react-intl';
 
 const messages = defineMessages({
   placeholder: { id: 'search.placeholder', defaultMessage: 'Search' }
 });
 
-const Search = React.createClass({
+class Search extends React.PureComponent {
 
-  propTypes: {
-    value: React.PropTypes.string.isRequired,
-    submitted: React.PropTypes.bool,
-    onChange: React.PropTypes.func.isRequired,
-    onSubmit: React.PropTypes.func.isRequired,
-    onClear: React.PropTypes.func.isRequired,
-    onShow: React.PropTypes.func.isRequired,
-    intl: React.PropTypes.object.isRequired
-  },
-
-  mixins: [PureRenderMixin],
+  constructor (props, context) {
+    super(props, context);
+    this.handleChange = this.handleChange.bind(this);
+    this.handleKeyDown = this.handleKeyDown.bind(this);
+    this.handleFocus = this.handleFocus.bind(this);
+  }
 
   handleChange (e) {
     this.props.onChange(e.target.value);
-  },
+  }
 
   handleClear (e) {
     e.preventDefault();
     this.props.onClear();
-  },
+  }
 
   handleKeyDown (e) {
     if (e.key === 'Enter') {
       e.preventDefault();
       this.props.onSubmit();
     }
-  },
+  }
 
   noop () {
 
-  },
+  }
 
   handleFocus () {
     this.props.onShow();
-  },
+  }
 
   render () {
     const { intl, value, submitted } = this.props;
@@ -68,6 +63,16 @@ const Search = React.createClass({
     );
   }
 
-});
+}
+
+Search.propTypes = {
+  value: PropTypes.string.isRequired,
+  submitted: PropTypes.bool,
+  onChange: PropTypes.func.isRequired,
+  onSubmit: PropTypes.func.isRequired,
+  onClear: PropTypes.func.isRequired,
+  onShow: PropTypes.func.isRequired,
+  intl: PropTypes.object.isRequired
+};
 
 export default injectIntl(Search);