Quick-fix the css infection problem; increment to v2.2.3
Implement the correct firefox fix for localizing CSS injection. Undo previous quick fix.

God Damn! I am proud of myself for finding this. It's a newly-implemented Mozilla method that isn't even documented yet. I found the bug thread where this missing feature had been described, followed the conversation, found the source code where the new method had been implemented, and deciphered its usage.
fixed a firefox build issue, updated description for task 'safari:dev'
Merge pull request #66 from aiannacc/fix-stylesheet-infestation

Fix stylesheet infestation, fix Firefox's build task and Safari's build task description