Trebuchet: copyright info should be translatable

For some languages, there is a standard on copyright strings.
Also, "project" is definitely a localizable word, so let's
make this string translatable here.

Change-Id: Ided3eb193333445784640e64cde7d1239cdfa35c
merge remote

Change-Id: I1c217e444ea044b6b31801c04e4fec5353b79beb