lots of UI changes, and keyboard command support

src/views/components/injected/CoursePopup/CoursePopup.tsx

@@ -1,19 +0,0 @@
-import React from 'react';
-import { Course } from 'src/shared/types/Course';
-import { Button } from '../../common/Button/Button';
-import styles from './CoursePopup.module.scss';
-
-interface Props {
-    course: Course;
-    onClose: () => void;
-}
-
-export default function CoursePopup({ course, onClose }: Props) {
-    return (
-        <div>
-            <h1>{course.fullName}</h1>
-            <p>{course.description}</p>
-            <Button onClick={onClose}>Close</Button>
-        </div>
-    );
-}