Bamboo should use default application link to retrieve issues +from jira 4.2.x+ when no project entity link is set up for a plan.

Steps to reproduce:
1) grab jira 4.2 (we can't reproduce problem on jira 4.3+)
2) grab bamboo 3.2.2
3) set up an application link from bamboo to jira, use outgoing "basic access"
4) set up a test project with a test issue on jira instance
5) set up a test project with a test plan on bamboo instance
5.1) force that plan to detect changes on a repository that will contain commit with jira-issue comment
5.2) for example:

mkdir test ; cd test
hg init ; echo "aaa" >> aaa.txt ; hg add aaa.txt ; hg commit --user "user" -m "initial"
echo "aaa" >> aaa.txt ; hg commit --user "user" -m "BAM-9867 message message"
# repeat above line when you need to trigger bamboo build

6) go to build result page of the plan, build should have contain commits with "BAM-9867" comments. (replace "BAM-9867" with your jira instance test issue)
7.1) when you click on "BAM-9867" you will get "unexpected error has occured"
7.2) while you should be redirected to the jira page
8.1) on the JIRA issues panel you should have see your issue, with it's icon, and with link to your jira instance
8.2) instead you will see something like "Can't retrieve issues" or similar error, I don't remember.
9) obviosly "Issues" tab is borked as well.