Fix for issue #9511 (https://trac.torproject.org/projects/tor/ticket/9511)

The toolbar_button_binding.xml file already defines the class values (toolbarbutton-1 and chromeclass-toolbar-additional) for the toolbar button. No need for the toolbar_button.xul
file to also define these values. My guess is that these classes (toolbarbutton-1 and chromeclass-toolbar-additional) add extra padding because they are in an XBL binding.
This should fix craigslist.org

There are some language specific 4th level subdomains that are not covered
under the *.craigslist.org wildcard cert.  This commit adds an exclusion for
all those domains.
Merge branch 'craigslist' of https://github.com/godsflaw/https-everywhere
[Craigslist.org] Exclude images
Merge branch 'master' of https://github.com/nullishzero/https-everywhere
[Craigslist.org] Exclude blog