输入新标签名称，添加成功后默认选中，保存即添加新的标签

Author: wanghengheng

Coding_iOS/Controllers/EditLabelViewController.m

@@ -108,6 +108,9 @@ - (void)addBtnClick:(UIButton *)sender
             if (data) {
                 weakSelf.tagToAdd.id = data;
                 [weakSelf.tagList addObject:weakSelf.tagToAdd];
+                [weakSelf.selectedTags addObject:weakSelf.tagToAdd];
+                weakSelf.navigationItem.rightBarButtonItem.enabled = YES;
+
                 weakSelf.tagToAdd = [ProjectTag new];
                 [weakSelf.myTableView reloadData];
                 sender.enabled = FALSE;