MiniABS 1.4: smaller player controls

- Play/pause becomes a rounded rectangle (58x46dp) instead of a 78dp circle,
  with 32dp icons and wider spacing (play_w/play_h/play_gap in dimens.xml)
- Skip buttons shrink from 82x56dp to 62x42dp, with 16sp text
- Version 1.4 (versionCode 5); there was no public 1.3

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

res/xml/settings.xml

@@ -50,7 +50,7 @@
     <PreferenceCategory android:title="Acerca de">
         <Preference
             android:key="about"
-            android:title="MiniABS 1.2"
+            android:title="MiniABS 1.4"
             android:summary="Un pequeno cliente de podcasts de Audiobookshelf para Android 2.2+" />
     </PreferenceCategory>
 </PreferenceScreen>