Add save/restore backup config to app view

src/views/app.html

@@ -258,6 +258,9 @@
         </form>
       </div>
       <div class="modal-footer ">
+        <input type="file" id="backupConfigFileInput" style="display:none"/>
+        <button type="button" class="btn btn-default pull-left" onclick="getElementById('backupConfigFileInput').click();">Upload Backup Config</button>
+
         <button type="button" class="btn btn-default" data-dismiss="modal">Cancel</button>
         <button type="submit" class="btn btn-outline btn-success pull-right" ng-click="importBackup.submit()" ng-disabled="importBackupForm.$invalid || importBackup.busy"><i class="fa fa-circle-notch fa-spin" ng-show="importBackup.busy"></i> Import</button>
       </div>
@@ -941,9 +944,6 @@
 
             <br/>
 
-            <!-- backup id copy helper -->
-            <input type="text" class="offscreen" aria-hidden="true" id="backupIdHelper" value="">
-
             <table ng-hide="!backups.backups.length" class="table table-hover" style="margin: 0;">
               <thead>
                 <tr>
@@ -957,6 +957,8 @@
                   <td><div ng-click="backups.copyBackupId(backup)" class="hand" uib-tooltip="{{ backups.copyBackupIdDone ? 'Copied to clipboard' : 'Click to copy backup id' }}" tooltip-placement="right"><i class="fa fa-copy"></i></div></td>
                   <td><div uib-tooltip="{{ backup.creationTime | prettyLongDate }}">v{{ backup.packageVersion }} - {{ backup.creationTime | prettyDate }}</div></td>
                   <td class="text-right no-wrap" style="vertical-align: bottom">
+                    <button class="btn btn-xs btn-default" ng-click="downloadConfig(backup)" uib-tooltip="Download Backup Configuration"><i class="fas fa-file-alt"></i></button>
+
                     <button class="btn btn-xs btn-default" ng-click="clone.show(backup)" uib-tooltip="Clone from this Backup"><i class="far fa-clone"></i></button>
                     <button class="btn btn-xs btn-danger" ng-click="restore.show(backup)" ng-disabled="app.taskId" uib-tooltip="Restore to this Backup"><i class="fas fa-history"></i></button>
                   </td>