Implement automatic restart of MyTracks on phone reboot.

In addition fix the following issues/add functionality:
0) Introduce MyTracksReceiver for listening on broadcast messages
1) Remove unnecessary call to VerifyChecker to avoid 403.
2) Clean up TrackRecordingService by adding private methods for common functionality
3) Fix a bug related to not canceling a timer after service was stopped
4) Add a new preference item to control behavior of new functionality
5) Add a unit test for the service (still need to figure out one issue with mocking content resolver).

MyTracksTest/default.properties

@@ -0,0 +1,13 @@
+# This file is automatically generated by Android Tools.
+# Do not modify this file -- YOUR CHANGES WILL BE ERASED!
+# 
+# This file must be checked in Version Control Systems.
+# 
+# To customize properties used by the Ant build system use,
+# "build.properties", and override values to adapt the script to your
+# project structure.
+
+# Indicates whether an apk should be generated for each density.
+split.density=false
+# Project target.
+target=Google Inc.:Google APIs:8