Fix for Issue 14

https://github.com/couchbase/couchbase-lite-java/issues/14
build.gradle - Attaches tasks to test that will copy all the tests from
android to Java, delete tests that are known not to work and copy all
the assets. Note that these are now 'attached' to test so anytime test
is called these tasks will automatically be called first.

LiteTestCaseBase/LiteTestContextBase - Pretty self explanatory.
Merge branch '14' of https://github.com/yaronyg/couchbase-lite-java into yaronyg-14
Fix libraries and Java7 dependencies
Merge branch 'yaronyg-14'