add logout button and use default album art in more locations

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

@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
     android:id="@+id/player_album_art_frame"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
@@ -11,13 +12,7 @@
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         android:scaleType="centerCrop"
+        app:srcCompat="@drawable/default_album_art"
         tools:ignore="ContentDescription,UnusedAttribute" />
 
-    <!--<ImageView-->
-    <!--android:id="@+id/player_image_background"-->
-    <!--android:layout_width="match_parent"-->
-    <!--android:layout_height="match_parent"-->
-    <!--android:scaleType="centerCrop"-->
-    <!--tools:ignore="ContentDescription,UnusedAttribute" />-->
-
 </FrameLayout>

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

@@ -3,6 +3,7 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_margin="2dp"
     android:foreground="?rectSelectorStrong">
 
@@ -23,6 +24,7 @@
                 android:layout_width="match_parent"
                 android:layout_height="match_parent"
                 android:scaleType="centerCrop"
+                app:srcCompat="@drawable/default_album_art"
                 tools:ignore="ContentDescription" />
 
         </com.kabouzeid.gramophone.views.WidthFitSquareLayout>

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

@@ -41,6 +41,7 @@
                 android:layout_height="40dp"
                 android:layout_gravity="center"
                 android:scaleType="centerCrop"
+                app:srcCompat="@drawable/default_album_art"
                 tools:ignore="ContentDescription" />
 
             <TextView