Minor JS consistency changes.
Remove pre IE 9 leftovers.
Merge pull request #476 from XhmikosR/js

Minor JS consistency changes.
Merge pull request #473 from XhmikosR/remove-pre-ie9-leftovers

Remove pre IE 9 leftovers.
Adding bootswatch 3.3.1 and downloader script for future version.
Merge pull request #478 from MaxCDN/bootswatch_3.3.1

Adding bootswatch 3.3.1 and downloader script for future version.
Fixing bootswatch updater script and bootswatch 3.3.1.
Removing amelia from tests.
Adding Bootlint 0.9.0, fixing update_bootlint script errors.
Merge pull request #481 from MaxCDN/issues/480

[#480] Adding Bootlint 0.9.0, fixing update_bootlint script errors.
Revert the unrelated changes from fa5efd7e01751090cb903a25a940c73114cc5489.