Evolution - string/UI freeze break approval plea

[Milan Crha <mcrha redhat com>]

        Hello,
in order to provide an application menu for Evolution, attached patch
at bug #675154 [1], I added one new translatable string
"Quick _Reference". All other strings are reused (this one was
required due to a mnemonic clash with a "_Quit" string).

Could I commit this to git master, please?

I think it would be nice to have this finally done for 3.18.0. If you
consider application menus part of UI, then I ask also for a UI freeze
break.
        Bye,
        Milan

P.S.: I'm sorry to provide a fix for this thing so late in the release
cycle, it made it upper in my ToDo list only recently.

[1] https://bugzilla.gnome.org/show_bug.cgi?id=675154