build: move ORM Lite core dep in base module

The base module will handle the model persistence. We will need to use
ORM Lite annotations

Change-Id: Id724b546de989312cad5c445e7db87cb0e979fb0
Tuleap: #1313
diff --git a/ring-android/libringclient/build.gradle b/ring-android/libringclient/build.gradle
index 993fe86..fd96edd 100644
--- a/ring-android/libringclient/build.gradle
+++ b/ring-android/libringclient/build.gradle
@@ -16,6 +16,9 @@
 
     // dependency injection
     compile 'javax.inject:javax.inject:1'
+
+    // ORM
+    compile 'com.j256.ormlite:ormlite-core:4.48'
 }
 
 sourceCompatibility = "1.7"