Convert all remaining Modals to use Portal (UI consistency) (#4625)

* FirstRun dialog -> Portal

* CreateAccount Modal -> Portal

* CreateWallet dialog -> Portal

* Transfer dialog -> Portal

* Fix failing tests

* ShapeShift dialog -> Portal

* Verification dialog -> Portal

* EditMeta dialog -> Portal

* PasswordManager dialog -> Portal

* WalletSettings dialog -> Portal

* AddAddress dialog -> Portal

* s/delete address/forget address/

* AddContract dialog -> Portal

* DeployContract dialog -> Portal

* ExceuteContract dialog -> Portal

* LoadContract dialog -> Portal

* SaveContract dialog -> Portal

* UpgradeParity dialog -> Portal

* Convert inline modals (tsk, tsk)

* Remove ui/Modal

* Import dialog i18n

* Button array returns (thanks @derhuerst)

* Unneeded debug

* Typo

* Readability formatting

js/src/modals/LoadContract/loadContract.js

@@ -20,7 +20,7 @@ import moment from 'moment';
 import React, { Component, PropTypes } from 'react';
 import { FormattedMessage } from 'react-intl';
 
-import { Button, Modal } from '~/ui';
+import { Button, Portal } from '~/ui';
 import Editor from '~/ui/Editor';
 import { CancelIcon, CheckIcon, DeleteIcon } from '~/ui/Icons';
 
@@ -55,8 +55,10 @@ export default class LoadContract extends Component {
     const { deleteRequest } = this.state;
 
     return (
-      <Modal
-        actions={ this.renderDialogActions() }
+      <Portal
+        buttons={ this.renderDialogActions() }
+        onClose={ this.onClose }
+        open
         title={
           deleteRequest
             ? (
@@ -72,10 +74,9 @@ export default class LoadContract extends Component {
               />
             )
         }
-        visible
       >
         { this.renderBody() }
-      </Modal>
+      </Portal>
     );
   }