fix save message result not captured bug
fix text message sender not set bug
expose file upload limit size to client
service.saveMessage change to void,clean temp file share when saving to
DB failed
fix wrong column save
clean temp upload file when save failed
add refCountMessage.deleteFile to clear temp uploaded files
fix not save message bug
improve failed message upload file clean logic
clean unused file .do not return when saving message (because of
UnsavedMessageQueue,we can not point out if message is actually saved
remove unused function.add displayError(code) function
copy more GlobalInfo config
improve to file upload