fix: all things (#124)

* fix 'Testing with Chai' 404 error

* Remove service worker and unregister old workers from clients

* Fix block name in QA and Chai intro

* Move the map to the index page

* Split test commands, have travis run format on test

* Only expand the first block

* Remove some margin from p tags on the index page

* Learn -> Curriculum link in header

* UI Fixes

* Use webpack plugin to destroy sercive worker

* Add spinner for unknown user state

* Fix map placement

* Fix vcurriculum button clicks

packages/learn/src/templates/Challenges/backend/Show.js

@@ -119,7 +119,6 @@ export class BackEnd extends PureComponent {
     const blockNameTitle = `${blockName} - ${title}`;
     return (
       <Row>
-        <ProjectToolPanel />
         <Col xs={6} xsOffset={3}>
           <Spacer />
           <div>
@@ -134,6 +133,7 @@ export class BackEnd extends PureComponent {
               options={options}
               submit={executeChallenge}
             />
+            <ProjectToolPanel />
           </div>
           <div>
             <br />