Possibility opening tasks in browser using Issue URL pattern for generic...

When using Task plugin configured with generic task server is no way to open current task in browser. Menu item is disabled because Idea doesn't know task url. Assembla doesn't include direct url to task in tickets.xml and if we want to make it we should to get some addition information like space id and tiket number. So, issue url template can help with it: substitute matched groups from ticket pattern and get link to issue.

![tt](https://f.cloud.github.com/assets/690543/1501191/a11f0288-4887-11e3-86a6-c2bc80a09b83.png)