cmake: fix installation of qi/translator.hpp
cmake: fix installation of qi/translator.hpp

Change-Id: I5aa7b2b96dec7ed0960db0aa9fd5e82431c2ebed
Reviewed-on: http://gerrit.aldebaran.lan/50248
Reviewed-by: dmerejkowsky <1e4b13000fa8777df4cefd2fd8215187e3deb062@aldebaran-robotics.com>
Tested-by: dmerejkowsky <1e4b13000fa8777df4cefd2fd8215187e3deb062@aldebaran-robotics.com>

aldebaran/libqi,vbarbaresi/libqi,aldebaran/libqi,bsautron/libqi,aldebaran/libqi