Add bottom padding to history/sources/extensions (fixes #3192)

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

@@ -14,6 +14,8 @@
             android:id="@+id/recycler"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
+            android:clipToPadding="false"
+            android:paddingBottom="@dimen/action_toolbar_list_padding"
             tools:listitem="@layout/source_main_controller_card_header" />
 
     </eu.kanade.tachiyomi.widget.ThemedSwipeRefreshLayout>

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

@@ -11,6 +11,7 @@
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         android:clipToPadding="false"
+        android:paddingBottom="@dimen/action_toolbar_list_padding"
         tools:listitem="@layout/history_item" />
 
     <eu.kanade.tachiyomi.ui.library.MaterialFastScroll

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

@@ -9,6 +9,8 @@
         android:id="@+id/recycler"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
+        android:clipToPadding="false"
+        android:paddingBottom="@dimen/action_toolbar_list_padding"
         tools:listitem="@layout/source_main_controller_card_header" />
 
     <eu.kanade.tachiyomi.ui.library.MaterialFastScroll