Use Project access, not Global, when displaying changesets

Fixes #41
Revert "Github: Wrong comparison of repository name"

This reverts commit a4190684f3e5f2e3fa21220f0a03fc8f794e0682 which
introduced a regression issue causing the plugin to fail retrieving the
data from the post_receive hook.

This is due to using the wrong repository attribute to compare with the
repository name in the payload ('name' instead of 'info/hub_reponame').

Fixes #55
Fix whitespace