Hotfixes missing licenses

>:-(

nusic-ui-android/src/main/res/drawable/ic_launcher_background.xml

@@ -1,4 +1,27 @@
 <?xml version="1.0" encoding="utf-8"?>
+<!--
+
+    Copyright (C) 2013 Johannes Schnatterer
+
+    See the NOTICE file distributed with this work for additional
+    information regarding copyright ownership.
+
+    This file is part of nusic.
+
+    nusic 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.
+
+    nusic 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 nusic.  If not, see <http://www.gnu.org/licenses/>.
+
+-->
 <vector
     android:height="108dp"
     android:width="108dp"

nusic-ui-android/src/main/res/mipmap-anydpi-v26/ic_launcher.xml

@@ -1,5 +1,28 @@
 <?xml version="1.0" encoding="utf-8"?>
+<!--
+
+    Copyright (C) 2013 Johannes Schnatterer
+
+    See the NOTICE file distributed with this work for additional
+    information regarding copyright ownership.
+
+    This file is part of nusic.
+
+    nusic 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.
+
+    nusic 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 nusic.  If not, see <http://www.gnu.org/licenses/>.
+
+-->
 <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
     <background android:drawable="@drawable/ic_launcher_background"/>
     <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
-</adaptive-icon>
+</adaptive-icon>

nusic-ui-android/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml

@@ -1,5 +1,28 @@
 <?xml version="1.0" encoding="utf-8"?>
+<!--
+
+    Copyright (C) 2013 Johannes Schnatterer
+
+    See the NOTICE file distributed with this work for additional
+    information regarding copyright ownership.
+
+    This file is part of nusic.
+
+    nusic 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.
+
+    nusic 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 nusic.  If not, see <http://www.gnu.org/licenses/>.
+
+-->
 <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
     <background android:drawable="@drawable/ic_launcher_background"/>
     <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
-</adaptive-icon>
+</adaptive-icon>