MiniABS 1.2: Galician interface, larger text and touch targets

- Translate the interface to Galician (tools/translate_gl.py), including
  Galician month abbreviations for dates, which Android 2.3 lacks
- Resize for the Galaxy Mini's 240x320 screen: larger text, rows, tabs and
  buttons; all sizes now live in res/values/dimens.xml
- Redraw play/pause/refresh icons for every density; slightly brighter
  secondary text colours

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

res/drawable/seek_thumb.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="oval">
     <solid android:color="@color/accent" />
-    <size android:width="14dp" android:height="14dp" />
+    <stroke android:width="2dp" android:color="@color/bg" />
+    <size android:width="@dimen/seek_thumb" android:height="@dimen/seek_thumb" />
 </shape>