Fix lint warnings; require 0 warnings for Travis build (#181)

.travis.yml

@@ -7,7 +7,7 @@ install:
 script:
 - make validate-no-uncommitted-package-lock-changes
 - npm run i18n_extract
-- npm run lint
+- npm run lint -- --max-warnings 0
 - npm run test
 - npm run build
 - npm run is-es5

src/course-home/progress-tab/Subsection.jsx

@@ -24,6 +24,7 @@ function Subsection({
     <section className="my-3 ml-3">
       <div className="row">
         <a className="h6" href={subsection.url}>
+          {/* eslint-disable-next-line react/no-danger */}
           <div dangerouslySetInnerHTML={{ __html: subsection.displayName }} />
           {showTotalScore && <span className="sr-only">{totalScoreSr}</span>}
         </a>

src/courseware/course/sequence/Unit.jsx

@@ -140,7 +140,7 @@ function Unit({
           scrolling="no"
           referrerPolicy="origin"
           onLoad={() => {
-            window.onmessage = function (e) {
+            window.onmessage = function handleResetDates(e) {
               if (e.data.event_name) {
                 dispatch(processEvent(e.data, fetchCourse));
               }

src/toast/LearningToast.jsx

@@ -25,9 +25,11 @@ export default function LearningToast({
       }}
     >
       <Toast.Header className="bg-gray-700 border-bottom-0 text-light">
+        {/* eslint-disable-next-line react/no-danger */}
         <div dangerouslySetInnerHTML={{ __html: header }} />
       </Toast.Header>
       <Toast.Body className="bg-gray-700 text-light">
+        {/* eslint-disable-next-line react/no-danger */}
         <div dangerouslySetInnerHTML={{ __html: body }} />
       </Toast.Body>
     </Toast>