Merge pull request #5 from jdevalk/master

Fixes #1, fixes #4 and some design improvements.
Merge pull request #6 from jdevalk/master

Handle purchase receipts through AJAX too.
Close window after handling action. Remove echo statements.
Add GROUP BY pm.post_id, we only want to show each order once.
Optimized SQL query
Merge branch 'master' of https://github.com/jdevalk/edd-helpscout

Conflicts:
	includes/class-ajax.php