UI and string tweaks

xwords4/android/app/src/main/res/layout/player_edit.xml

@@ -79,6 +79,7 @@
       <LinearLayout android:orientation="horizontal"
                     android:layout_height="wrap_content"
                     android:layout_width="fill_parent"
+                    android:layout_marginLeft="16dp"
                     >
         <TextView android:layout_height="wrap_content"
                   android:layout_width="wrap_content"

xwords4/android/app/src/main/res/values/strings.xml

@@ -2631,9 +2631,8 @@
     as a replacement for the relay.</string>
     <!-- Title of menuitem that launches Known Players viewer -->
     <string name="gamel_menu_knownplyrs">Known Players…</string>
-    <string name="knowns_expl">These are the remote players CrossWords
-    has seen enough to know how to invite them quickly to new
-    games. Their names default to what the remote player has chosen,
+    <string name="knowns_expl">These are your known remote
+    players. Their names default to what the remote player has chosen,
     but you can change the names if you want.</string>
     <!-- Creation date of newest game with that player -->
     <string name="knowns_ts_fmt">Newest game: %1$s</string>