hooks/commit-msg: Fix story branch matching

For some reason the hook was expecting the story ID to be an integer, which does
not have to be the case with JIRA issue keys.

Change-Id: 45511053a6
modules/jira/client: Add support for versions

Change-Id: 6131a66b22
Story-Id: SF-6
modules/jira/client: Improve Issue

Add a couple of missing fields, namely FixVersions and Status, and a few other
tweaks.

Change-Id: f7e0628ff6
Story-Id: SF-6