Fix success message when validating group follower

Closes #612

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

js/src/i18n/en_US.json

@@ -956,5 +956,6 @@
   "The group's avatar was changed.": "The group's avatar was changed.",
   "The group's banner was changed.": "The group's banner was changed.",
   "The group's short description was changed.": "The group's short description was changed.",
-  "No information": "No information"
+  "No information": "No information",
+  "@{username}'s follow request was accepted": "@{username}'s follow request was accepted"
 }

js/src/i18n/fr_FR.json

@@ -1050,5 +1050,6 @@
   "{title} ({count} todos)": "{title} ({count} todos)",
   "{username} was invited to {group}": "{username} a été invité à {group}",
   "© The OpenStreetMap Contributors": "© Les Contributeur⋅ices OpenStreetMap",
-  "No information": "Non renseigné"
+  "No information": "Non renseigné",
+  "@{username}'s follow request was accepted": "@{username}'s follow request was accepted"
 }

js/src/views/Group/GroupFollowers.vue

@@ -245,11 +245,14 @@ export default class GroupFollowers extends mixins(GroupMixin) {
           },
         ],
       });
-      this.$notifier.success(
-        this.$t("@{username}'s follow request was rejected", {
-          username: follower.actor.preferredUsername,
-        }) as string
-      );
+      const message = approved
+        ? this.$t("@{username}'s follow request was accepted", {
+            username: follower.actor.preferredUsername,
+          })
+        : this.$t("@{username}'s follow request was rejected", {
+            username: follower.actor.preferredUsername,
+          });
+      this.$notifier.success(message as string);
     } catch (error) {
       console.error(error);
       if (error.graphQLErrors && error.graphQLErrors.length > 0) {