Remove conditional ga HTTPS loading

Shortcut since site is always secure.
Fixes gh-137
Merge pull request #183 from nschonni/force-ga-https-137

Remove conditional ga HTTPS loading
Change repository header to link to Travis repo.

Linking this to GitHub is cause for confusion, even for myself.
The tiny octocat now points to GitHub instead.
Fix specs and expectations for URL changes.
Fix GitHub URL test.
Merge pull request #184 from travis-ci/mm-repo-name-links-to-travis

Change repository header to link to Travis repo.