Refactor about:styles with Aphrodite

[luixxiul]

Test Plan

make sure about:styles is as it should be

Original issue description

Refactor about:styles with Aphrodite. It will let us remove less/about/styles.less, which is used only on that page.

[luixxiul]

browser-laptop/js/about/styles.js

Lines 90 to 106 in 97503ff

	<div className='container'>
	<h2>Plain textarea</h2>
	<TextArea placeholder='TextArea' />
	<pre><code>
	const { '{TextArea}' } = require('../../app/renderer/components/textbox'){'\n'}
	&lt;TextArea />
	</code></pre>
	</div>
	<div className='container'>
	<h2>Default textarea; font size is specified</h2>
	<DefaultTextArea placeholder='DefaultTextArea' />
	<pre><code>
	const { '{DefaultTextArea}' } = require('../../app/renderer/components/textbox'){'\n'}
	&lt;DefaultTextArea />
	</code></pre>
	</div>

is broken because of this commit: 269d37b for #7163. I will push a fix.

[srirambv]

Small button definitely doesn't look small 😄

[luixxiul]

That's another issue which I have shared with @bradleyrichter and @bsclifton in a commit some times ago and I'm going to fix it by refactoring findBar with Aphrodite.

[bradleyrichter]

big is the new small. 😄