Redmine

I find some strings are not localized while exporting some issues to cvs file.

I checked out the zh.yml in branch 1.3 and find that last several lines are still English (ln. 1005-1010).

So I translate them here. Hope someone can help to make a patch. Thanks!

button_edit_section: 编辑此区域
setting_repositories_encodings: 附件和版本库编码
description_all_columns: 所有列
button_export: 导出
label_export_options: "%{export_format} 导出选项" 
error_attachment_too_big: 该文件无法上传。超过文件大小限制 (%{max_size})