Copyright update, libs and gradle update

app/src/main/res/drawable/splash_drawable.xml

@@ -1,4 +1,22 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?><!--
+  ~ Look4Sat. Amateur radio and weather satellite tracker and passes predictor for Android.
+  ~ Copyright (C) 2019, 2020 Arty Bishop (bishop.arty@gmail.com)
+  ~
+  ~ This program 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 2 of the License, or
+  ~ (at your option) any later version.
+  ~
+  ~ This program 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, write to the Free Software Foundation, Inc.,
+  ~ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+  -->
+
 <layer-list xmlns:android="http://schemas.android.com/apk/res/android"
     android:opacity="opaque">
     <item android:drawable="@drawable/ic_launcher_background" />
@@ -7,4 +25,4 @@
             android:gravity="center"
             android:src="@drawable/splash_front" />
     </item>
-</layer-list>
+</layer-list>