added back button to downtime create and edit

frontend/src/components/Dashboard/DashboardDowntimes.vue

@@ -121,7 +121,6 @@ export default {
             if (end) {
                 endSec = convertToSec(end) + (60 * 60 * 23 + 59 * 60 + 59); // adding end of time for that particular date.
             }
-        
 
             this.isLoading = true;
             await this.$store.dispatch({ type: 'getDowntimes', payload: { ...params, start: startSec, end: endSec } });

frontend/src/forms/Downtime.vue

@@ -1,8 +1,14 @@
 <template>
   <form>
     <div class="card contain-card mb-4">
-      <div class="card-header">
-        {{ $t("downtime_info") }}
+      <div class="card-header d-flex align-items-center">
+        <button
+          class="btn p-0 mr-2"
+          @click="$router.push('/dashboard/downtimes');"
+        >
+          <FontAwesomeIcon icon="arrow-circle-left" />
+        </button>
+        <div>{{ $t("downtime_info") }}</div>
       </div>
       <div class="card-body">
         <div class="form-group row">