Update Jira Issue project key formats to reflect Jira's more restrictive default

Summary

Jira used to be more relaxed and allow the underscore character to be present in Jira project keys, which has since been removed. Fisheye/Crucible still support the old standard. This update would allow Fisheye/Crucible to match Jira's documentation and would match the current Jira standard for issue keys.

Jira's current Standard:

"The default Jira key format – that is, two or more uppercase letters ([A-Z][A-Z]+), followed by a hyphen and the issue number."

Current Behavior

If a Jira issue key is placed in a review's title, the below will occur:
"Title to Crucible review_ABC-123"
Actual Jira issue key: ABC-123
What Crucible will parse and think is the issue key: review_ABC-123