revert(client): place tool panel at the bottom

This reverts commit e6d2a9df93.

client/src/templates/Challenges/components/Tool-Panel.js

@@ -21,7 +21,6 @@ const mapDispatchToProps = dispatch =>
   );
 
 const propTypes = {
-  className: PropTypes.string,
   executeChallenge: PropTypes.func.isRequired,
   guideUrl: PropTypes.string,
   isMobile: PropTypes.bool,
@@ -32,7 +31,6 @@ const propTypes = {
 };
 
 function ToolPanel({
-  className,
   executeChallenge,
   isMobile,
   openHelpModal,
@@ -43,11 +41,9 @@ function ToolPanel({
 }) {
   return (
     <Fragment>
-      <div
-        className={`tool-panel-group ${
+      <div className={`tool-panel-group ${
           isMobile ? 'tool-panel-group-mobile' : ''
-        } ${className}`}
-        >
+        }`}>
         <Button block={true} bsStyle='primary' onClick={executeChallenge}>
           {isMobile ? 'Run' : 'Run the Tests'}
         </Button>
@@ -96,10 +92,7 @@ function ToolPanel({
 ToolPanel.displayName = 'ToolPanel';
 ToolPanel.propTypes = propTypes;
 
-export default connect(
-  mapStateToProps,
-  mapDispatchToProps
-)(ToolPanel);
+export default connect(mapStateToProps, mapDispatchToProps)(ToolPanel);
 
 /*
 <Button