Updated a lot of components to PureComponents. Better performance.

app/src/components/Controls/Sidebar.js

@@ -1,4 +1,4 @@
-import React, { Component } from 'react';
+import React from 'react';
 import PropTypes from 'prop-types';
 import { connect } from 'react-redux';
 import { withStyles } from '@material-ui/core/styles';
@@ -37,7 +37,7 @@ const styles = (theme) =>
 		}
 	});
 
-class Sidebar extends Component
+class Sidebar extends React.PureComponent
 {
 	render()
 	{