Remove initialization message.

Working under the assumption that it should load reasonably quickly, and
that there's a space for something to load makes it evident enough. To
a message - if nothing else - adds localization burden.
Replace manual HTML encoding with jQuery.
Break up element rendering for readability.

* Use cur instead of commit to avoid commit.commit.
* Remove "first" and "last" item classes.
* Remove link back to repository.
Add link to repo; license in script header.

Seems preferable to in the page.
Merge pull request #14 from Thynix/xss

XSS fixes; other changes