update icons

- icons for dogecoin and litecoin
- updated icons for website, bitcoin, donate, flattr and issues

Thanks to xphnx (https://gitlab.com/xphnx)

F-Droid/res/layout/app_details_summary.xml

@@ -157,9 +157,9 @@ Changelog" />
                 android:id="@+id/changelog"
                 android:layout_width="wrap_content"
                 android:layout_height="match_parent"
-                android:drawableLeft="@drawable/ic_issues"
+                android:drawableLeft="@drawable/ic_changelog"
                 android:drawablePadding="4dp"
-                android:drawableStart="@drawable/ic_issues"
+                android:drawableStart="@drawable/ic_changelog"
                 android:gravity="center_vertical"
                 android:paddingTop="4dp"
                 android:text="@string/menu_changelog"
@@ -205,9 +205,9 @@ Changelog" />
                 android:id="@+id/litecoin"
                 android:layout_width="wrap_content"
                 android:layout_height="match_parent"
-                android:drawableLeft="@drawable/ic_donate"
+                android:drawableLeft="@drawable/ic_litecoin"
                 android:drawablePadding="4dp"
-                android:drawableStart="@drawable/ic_donate"
+                android:drawableStart="@drawable/ic_litecoin"
                 android:gravity="center_vertical"
                 android:paddingTop="4dp"
                 android:text="@string/menu_litecoin"
@@ -217,9 +217,9 @@ Changelog" />
                 android:id="@+id/dogecoin"
                 android:layout_width="wrap_content"
                 android:layout_height="match_parent"
-                android:drawableLeft="@drawable/ic_donate"
+                android:drawableLeft="@drawable/ic_dogecoin"
                 android:drawablePadding="4dp"
-                android:drawableStart="@drawable/ic_donate"
+                android:drawableStart="@drawable/ic_dogecoin"
                 android:gravity="center_vertical"
                 android:paddingTop="4dp"
                 android:text="@string/menu_dogecoin"

README.md

@@ -137,5 +137,5 @@ published by the Free Software Foundation, either version 3 of the License, or
 Some icons are made by [Picol](http://www.flaticon.com/authors/picol),
 [Icomoon](http://www.flaticon.com/authors/icomoon) or
 [Dave Gandy](http://www.flaticon.com/authors/dave-gandy) from
-[Flaticon](http://www.flaticon.com) and are licensed by
+[Flaticon](http://www.flaticon.com) or by Google and are licensed by
 [Creative Commons BY 3.0](http://creativecommons.org/licenses/by/3.0/).