Adds an option to export follows

src/components/user_settings/user_settings.js

@@ -8,6 +8,7 @@ const UserSettings = {
       followList: null,
       followImportError: false,
       followsImported: false,
+      enableFollowsExport: true,
       uploading: [ false, false, false, false ],
       previews: [ null, null, null ]
     }
@@ -137,6 +138,34 @@ const UserSettings = {
           this.uploading[3] = false
         })
     },
+    /* This function takes an Array of Users
+     * and outputs a file with all the addresses for the user to download
+     */
+    exportPeople(Users) {
+      // Get all the friends addresses
+      var UserAddresses = Users.map(function(user) {
+	// check is it's a local user
+	if(user && user.is_local) {
+	  // append the instance address
+	  user.screen_name += '@' + location.hostname;
+	}
+	return user.screen_name;
+      }).join('\n');
+      // Make the user download the file
+      var fileToDownload = document.createElement('a');
+      fileToDownload.setAttribute('href', 'data:text/plain;charset=utf-8,' + encodeURIComponent(UserAddresses));
+      fileToDownload.setAttribute('download', 'friends.csv');
+      fileToDownload.style.display = 'none';
+      document.body.appendChild(fileToDownload);
+      fileToDownload.click();
+      document.body.removeChild(fileToDownload);
+    },
+    exportFollows() {
+      this.enableFollowsExport = false;
+      this.$store.state.api.backendInteractor
+	.fetchFriends({id: this.$store.state.users.currentUser.id})
+	.then(this.exportPeople);
+    },
     followListChange () {
       // eslint-disable-next-line no-undef
       let formData = new FormData()