ADEN-687 Merging all SevenOne Media JS to one file

* The Safari 5 workaround is not needed with this update
* The code is simpler overall
* The #WikiaTopAds rule in CSS is not needed anymore (sync with Ingrid)

We need permission from SevenOne Media to host their files on our servers.

* Every time Sites/wikia.js or globalV6.js is updated we need to redownload them
* Every time my_integration.css is updated we need to update the my_integration.css.js (instructions in the file)