Please upgrade mockwebserver to at least 1.3.0

When I try to run the couchbase-lite-android tests using Gradle 1.12 on Intellij Ultimate 14 EAP I run into https://github.com/square/okhttp/issues/357. This bug was actually fixed in mockwebserver 1.3.0. In fact mockwebserver is now at 2.0, I'm not sure why we aren't using the latest but I tried at 1.3.0 and it at least got me past that bug (I'm now grappling with a different bug in Test16_ParallelPushReplication but that's another story).