Move from ant build system to gradle
MinApi version is now 14
test: removed old ant test files
test: additional tests for utils package
utils: removed unused log classes
test: more utils tests
test: moved ods tests to new package hierarchy
ods: cleanup in RestCall and RestException
ods: more cleanup in RestCall
test :added GcmRegistrationManagerTest

... and fixed a bug in GcmRegistrationManager
test: added GcmIdManagerTest
test: added SharedPreferencesHelper for clearing shared prefs
test: added BaseGcmReceiverTest
test: added BaseGcmIntentServiceTest
ods: fixed minor bug in unregistering clientIds with missing eplStmts