Add drawable resource for night mode

core/src/main/res/drawable-night/ic_open_in_new_24dp.xml

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Kiwix Android
+  ~ Copyright (c) 2020 Kiwix <android.kiwix.org>
+  ~ 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 3 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, see <http://www.gnu.org/licenses/>.
+  ~
+  -->
+
+<vector xmlns:tools="http://schemas.android.com/tools"
+  android:height="24dp"
+  android:viewportHeight="24" android:viewportWidth="24"
+  android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
+  <path android:fillColor="#AAAAAA" android:pathData="M19,19H5V5h7V3H5c-1.11,0 -2,0.9 -2,2v14c0,1.1 0.89,2 2,2h14c1.1,0 2,-0.9 2,-2v-7h-2v7zM14,3v2h3.59l-9.83,9.83 1.41,1.41L19,6.41V10h2V3h-7z" />
+</vector>

core/src/main/res/drawable/ic_open_in_new_24dp.xml

@@ -20,6 +20,5 @@
   android:height="24dp"
     android:viewportHeight="24" android:viewportWidth="24"
     android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
-    <path android:fillColor="?colorOnSurface" android:pathData="M19,19H5V5h7V3H5c-1.11,0 -2,0.9 -2,2v14c0,1.1 0.89,2 2,2h14c1.1,0 2,-0.9 2,-2v-7h-2v7zM14,3v2h3.59l-9.83,9.83 1.41,1.41L19,6.41V10h2V3h-7z"
+    <path android:fillColor="#565656" android:pathData="M19,19H5V5h7V3H5c-1.11,0 -2,0.9 -2,2v14c0,1.1 0.89,2 2,2h14c1.1,0 2,-0.9 2,-2v-7h-2v7zM14,3v2h3.59l-9.83,9.83 1.41,1.41L19,6.41V10h2V3h-7z" />
-      tools:ignore="VectorRaster" />
 </vector>