jkichline/ACConnect — pull request #7 by traximus (2013-01-28 07:04:13+00:00)
Title: some little improvements

1.fix a problem on **ACWebDAVItem's** **createDateStr** and **modifyDateStr**,
it will not return nil now(reference from [DAVKit](https://github.com/mattrajca/DAVKit))

-----------------------------------

2.fix a bug on transfering the parameter **overwrite** in **ACWebDAVCopyRequest**;
It didn't transfer **overwrite** successfully before.

-----------------------------------

3 fix the delegate call of **ACWebDAVCopyRequest** and **ACWebDAVMoveRequest**;

-----------------------------------

4.**ACWebDAVDownloadRequest.h&.m**
* add a new var to hold the reference of **currentConnection**, used to cancel a
request if needed;
* also add a new method ```cancel ``` to cancel this request

-----------------------------------

5.**ACWebDAVDeleteRequest.m**
``` - connection: didReceiveResponse:```
* response.statusCode=201 OR response.statusCode=204 all shows deleted successfully.

-----------------------------------

6.**ACWebDAVClient.h**

* - add new optional delegate methods

```- (BOOL)needToCancelDownload```

```- (void)resetCancelDownload:(BOOL)cancel```

```- (BOOL)needToCancelUpload```

```- (void)resetCancelUpload:(BOOL)cancel```

used to check if need to cancel a request