Update copyright notices for translations

app/src/main/res/values-fr/strings.xml

@@ -1,4 +1,22 @@
 <?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 2016 François Mahé
+  ~
+  ~ This file is part of Loop Habit Tracker.
+  ~
+  ~ Loop Habit Tracker is free software: you can redistribute it and/or modify
+  ~ it under the terms of the GNU General Public License as published by the
+  ~ Free Software Foundation, either version 3 of the License, or (at your
+  ~ option) any later version.
+  ~
+  ~ Loop Habit Tracker is distributed in the hope that it will be useful, but
+  ~ WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+  ~ or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+  ~ more details.
+  ~
+  ~ You should have received a copy of the GNU General Public License along
+  ~ with this program. If not, see <http://www.gnu.org/licenses/>.
+  -->
 <resources>
     <string name="app_name">"Loop - Suivi d'habitudes"</string>
     <string name="main_activity_title">"Habitude"</string>

app/src/main/res/values-zh/strings.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (C) 2016 Álinson Santos Xavier <isoron@gmail.com>
+  ~ Copyright (C) 2016 Limin Lu
   ~
   ~ This file is part of Loop Habit Tracker.
   ~