local-metadata: fix case sensitive blacklist words

https://bugzilla.gnome.org/show_bug.cgi?id=732261
local-metadata: check for updated title on tests

https://bugzilla.gnome.org/show_bug.cgi?id=732261
local-metadata: add test to new matching case.

https://bugzilla.gnome.org/show_bug.cgi?id=732261