Use plain Audio API, drop Howler dependency

package.json

@@ -16,7 +16,6 @@
         "@babel/polyfill": "^7.0.0",
         "file-saver": "^1.3.8",
         "gps-to-gpx": "git://github.com/phyks/gps-to-gpx.git#2c9da24ca98ecd520ee75276714d4df337696475",
-        "howler": "^2.0.15",
         "material-icons": "^0.2.3",
         "nosleep.js": "^0.7.0",
         "ol": "^5.1.3",

src/components/ReportCard.vue

@@ -49,8 +49,6 @@
 </template>
 
 <script>
-import { Howl } from 'howler';
-
 import { REPORT_TYPES, REPORT_ALARM_VIBRATION_SEQUENCE } from '@/constants';
 import { distanceInWordsToNow } from '@/tools/date';
 import beepSound from '@/assets/beep.mp3';
@@ -77,12 +75,8 @@ export default {
         Object.keys(REPORT_TYPES).forEach((type) => {
             icons[type] = REPORT_TYPES[type].image;
         });
-        const onplayerror = () => this.beepAudio.once('unlock', () => this.beepAudio.play());
         return {
-            beepAudio: new Howl({
-                src: [beepSound],
-                onplayerror,
-            }),
+            beepAudio: new Audio(beepSound),
             icons,
         };
     },