Revert "Convert background page to event page"
Revert "Convert background page to event page"

This reverts commit 23203e16ec9635db9c67d69fd36a874f2c8c2b25.

timborden/browser-laptop,diasdavid/browser-laptop,luixxiul/browser-laptop,diasdavid/browser-laptop,diasdavid/browser-laptop,luixxiul/browser-laptop,luixxiul/browser-laptop,diasdavid/browser-laptop,timborden/browser-laptop,timborden/browser-laptop,luixxiul/browser-laptop,timborden/browser-laptop