Resolve default export warnings from Webpack

Webpack was printing several warnings about missing default exports,
particularly from components, where we auto-generate a default import via the
component index.

As part of this, the emoji picker recent handling (which is not a component) is
moved elsewhere to avoid the generated import.

src/components/views/emojipicker/EmojiPicker.js

@@ -20,7 +20,7 @@ import PropTypes from 'prop-types';
 import * as sdk from '../../../index';
 import { _t } from '../../../languageHandler';
 
-import * as recent from './recent';
+import * as recent from '../../../emojipicker/recent';
 import {DATA_BY_CATEGORY, getEmojiFromUnicode} from "../../../emoji";
 
 export const CATEGORY_HEADER_HEIGHT = 22;