Fix validatorregistry pref listener function

We had an old variable for the branch which didn't get updated when this
was switched to the new preferences code.  Fix it.

Signed-off-by: Kevin Locke <kevin@kevinlocke.name>
Fix the validation console for post-08a7db545880

The code in consoleBindings.xml was updated to use Services.jsm in
changeset 08a7db545880.  Handle this correctly in our code.

This is still ugly.  Too bad the console isn't more extensible.

Signed-off-by: Kevin Locke <kevin@kevinlocke.name>
Bump supported Firefox version to 23.0a1

The extension works as intended for all the tests in the latest nightly
release (23.0a1).

Signed-off-by: Kevin Locke <kevin@kevinlocke.name>
Omnivalidator 0.1.3

Need to release the fix for properly initializing the console in Firefox
19+ ASAP.

Update the ChangeLog and bump the version to 0.1.3.

Signed-off-by: Kevin Locke <kevin@kevinlocke.name>