do not center the letters scrollbar, move it to the top

Author: tibbi

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

@@ -45,9 +45,10 @@
         <com.reddit.indicatorfastscroll.FastScrollerView
             android:id="@+id/letter_fastscroller"
             android:layout_width="32dp"
-            android:layout_height="match_parent"
-            android:paddingBottom="@dimen/activity_margin"
-            android:layout_alignParentEnd="true" />
+            android:layout_height="wrap_content"
+            android:layout_alignParentEnd="true"
+            android:paddingTop="@dimen/big_margin"
+            android:paddingBottom="@dimen/big_margin" />
 
         <com.reddit.indicatorfastscroll.FastScrollerThumbView
             android:id="@+id/letter_fastscroller_thumb"