Small UI changes

webclient/src/App.js

@@ -58,7 +58,7 @@ class App extends React.Component {
 						<p>
 							<Link to='/'>QotNews</Link>
 
-							<span className='theme'>Theme: <a href='#' onClick={() => this.light()}>Light</a> - <a href='#' onClick={() => this.dark()}>Dark</a></span>
+							<span className='theme'><a href='#' onClick={() => this.light()}>Light</a> - <a href='#' onClick={() => this.dark()}>Dark</a></span>
 							<br />
 							<span className='slogan'>Hacker News, Reddit, Lobsters, and Tildes articles rendered in reader mode.</span>
 						</p>

webclient/src/Submit.js

@@ -41,7 +41,7 @@ class Submit extends Component {
 			<span className='search'>
 				<form onSubmit={this.submitArticle}>
 					<input
-						placeholder='Submit Article'
+						placeholder='Submit URL'
 						ref={this.inputRef}
 					/>
 				</form>