Updating text to remove JIRA version, making Asana instructions more explicit

Clarifying the Asana instructions, since the first number in the URL is not reliably a project ID.  Also removing '5' from JIRA text, since there's a new version out which we also support.

Before:
![screen shot 2013-06-03 at 3 53 07 pm](https://f.cloud.github.com/assets/1056957/601722/4e27947c-cc87-11e2-852c-d9cf4faa3424.png)

After:
![screen shot 2013-06-03 at 3 53 29 pm](https://f.cloud.github.com/assets/1056957/601724/51f5c006-cc87-11e2-8020-f82381b8e1b0.png)