Refactor key value table to accept data content as a property

[MAILPOET-1517]

assets/js/src/common/key_value_table.jsx

@@ -3,7 +3,7 @@ import React from 'react';
 const KeyValueTable = props => (
   <table className={'widefat fixed'} style={{ maxWidth: props.max_width }}>
     <tbody>
-      {props.children.map(row => (
+      {props.rows.map(row => (
         <tr key={`row_${row.key}`}>
           <td className={'row-title'}>{ row.key }</td><td>{ row.value }</td>
         </tr>
@@ -14,7 +14,7 @@ const KeyValueTable = props => (
 
 KeyValueTable.propTypes = {
   max_width: React.PropTypes.string,
-  children: React.PropTypes.arrayOf(React.PropTypes.shape({
+  rows: React.PropTypes.arrayOf(React.PropTypes.shape({
     key: React.PropTypes.string.isRequired,
     value: React.PropTypes.oneOfType([
       React.PropTypes.string,