Minor style fix, reenable debug mode

code/ContextAnalyser/src/uk/co/md87/android/contextanalyser/ContextAnalyserService.java

 
     public static final int CONTEXT_PLACE = 1;
 
-    public static final boolean DEBUG = false;
+    public static final boolean DEBUG = true;
 
-    private static final int POLLING_DELAY = 60000;
+    private static final int POLLING_DELAY = 6000;
 
     private final Runnable scheduleRunnable = new Runnable() {
 

code/ContextAnalyser/src/uk/co/md87/android/contextanalyser/DataHelper.java

             insertJourneyStepStatement, updateLocationStatement,
             updateLocationVisitStatement, updateJourneyStatement;
 
-    private SQLiteDatabase db;
+    private final SQLiteDatabase db;
 
     public DataHelper(final Context context) {
         final OpenHelper helper = new OpenHelper(context);