LicenseActivity: add new license information

app/src/main/res/layout/activity_license.xml

@@ -31,7 +31,7 @@
                 android:gravity="center_vertical"
                 android:lineSpacingMultiplier="1.1"
                 android:text="@string/license_description" />
-
+            
             <com.keylesspalace.tusky.view.LicenseCard
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
@@ -61,6 +61,16 @@
                 license:license="@string/license_apache_2"
                 license:link="https://github.com/material-components/material-components-android"
                 license:name="Material Components for Android" />
+            
+            <com.keylesspalace.tusky.view.LicenseCard
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginEnd="12dp"
+                android:layout_marginStart="12dp"
+                android:layout_marginTop="12dp"
+                license:license="@string/license_apache_2"
+                license:link="https://github.com/google/flexbox-layout"
+                license:name="FlexboxLayout" />
 
             <com.keylesspalace.tusky.view.LicenseCard
                 android:layout_width="match_parent"
@@ -229,8 +239,8 @@
                 android:layout_marginStart="12dp"
                 android:layout_marginTop="12dp"
                 license:license="@string/license_cc_by_sa_4"
-                license:link="https://github.com/tuskyapp/artwork"
-                license:name="Tusky elephant artwork" />
+                license:link="https://git.mentality.rip/FWGS/fwgs-artwork"
+                license:name="Husky's Pleroma-tan artwork" />
 
             <TextView
                 android:id="@+id/licenseApacheTextView"