Clean up SendDialog.java

mytracks_send_to_google.xml
- remove unused ids.
- rename id variables.
- set textSize to 18dip to fit "Google Fusion Tables".
- set margin in ScrollView because its height is 0dip
  and settings margins in its children have no effect.

SendDialog.java
- use ApiFeature.applyPreferenceChanges to commit preference changes.
- set myMapsGroup View to GONE when 'Google My Maps' is not checked.
- use Context.MODE_PRIVATE.
- onStop, call super.onStop first.

MyTracksTest/.settings/org.eclipse.jdt.apt.core.prefs

@@ -0,0 +1,7 @@
+#Tue Oct 25 14:08:44 PDT 2011
+eclipse.preferences.version=1
+org.eclipse.jdt.apt.aptEnabled=true
+org.eclipse.jdt.apt.genSrcDir=.apt_generated
+org.eclipse.jdt.apt.processorOptions/bin_dir=%PROJECT.DIR%/bin/classes
+org.eclipse.jdt.apt.processorOptions/logfile=%PROJECT.DIR%/AnnotationProcessor.log
+org.eclipse.jdt.apt.reconcileEnabled=false