Implemented UI for Accounts applications management.

Introduced copy service and injected it usage into auth finish page.
Introduced Collapse component.
Introduced Radio component.
Generalized Checkbox component to share Radio component styles.
Improved Textarea component: it now has auto height functionality.
Improved profile/BackButton component: now you can pass custom url.
BSOD is no longer displayed on 404 response.

src/components/ui/form/TextArea.js

@@ -1,38 +1,38 @@
-import PropTypes from 'prop-types';
+// @flow
 import React from 'react';
+import TextareaAutosize from 'react-textarea-autosize';
 
 import classNames from 'classnames';
 
 import { uniqueId, omit } from 'functions';
-import { colors, skins, SKIN_DARK, COLOR_GREEN } from 'components/ui';
+import { SKIN_DARK, COLOR_GREEN } from 'components/ui';
 
 import styles from './form.scss';
 import FormInputComponent from './FormInputComponent';
 
-export default class TextArea extends FormInputComponent {
-    static displayName = 'TextArea';
+import type { Skin, Color } from 'components/ui';
+import type { MessageDescriptor } from 'react-intl';
 
-    static propTypes = {
-        placeholder: PropTypes.oneOfType([
-            PropTypes.shape({
-                id: PropTypes.string
-            }),
-            PropTypes.string
-        ]),
-        label: PropTypes.oneOfType([
-            PropTypes.shape({
-                id: PropTypes.string
-            }),
-            PropTypes.string
-        ]),
-        error: PropTypes.string,
-        skin: PropTypes.oneOf(skins),
-        color: PropTypes.oneOf(colors)
-    };
+type TextareaAutosizeProps = {
+    onHeightChange?: (number, TextareaAutosizeProps) => void,
+    useCacheForDOMMeasurements?: bool,
+    minRows?: number,
+    maxRows?: number,
+    inputRef?: (HTMLTextAreaElement) => void,
+} | HTMLTextAreaElement;
+
+export default class TextArea extends FormInputComponent<{
+    placeholder?: string | MessageDescriptor,
+    label?: string | MessageDescriptor,
+    error?: string,
+    skin: Skin,
+    color: Color,
+} | TextareaAutosizeProps> {
+    static displayName = 'TextArea';
 
     static defaultProps = {
         color: COLOR_GREEN,
-        skin: SKIN_DARK
+        skin: SKIN_DARK,
     };
 
     render() {
@@ -41,8 +41,8 @@ export default class TextArea extends FormInputComponent {
 
         const props = omit({
             type: 'text',
-            ...this.props
-        }, Object.keys(TextArea.propTypes).filter((prop) => prop !== 'placeholder'));
+            ...this.props,
+        }, ['label', 'error', 'skin', 'color']);
 
         if (label) {
             if (!props.id) {
@@ -64,7 +64,7 @@ export default class TextArea extends FormInputComponent {
             <div className={styles.formRow}>
                 {label}
                 <div className={styles.textAreaContainer}>
-                    <textarea ref={this.setEl}
+                    <TextareaAutosize inputRef={this.setEl}
                         className={classNames(
                             styles.textArea,
                             styles[`${skin}TextField`],