Move remaining model tests to JVM; simplify SQLite implementation

app/build.gradle

@@ -35,6 +35,17 @@ android {
         targetCompatibility 1.8
         sourceCompatibility 1.8
     }
+
+    testOptions {
+        unitTests.all {
+            testLogging {
+                events "passed", "skipped", "failed", "standardOut", "standardError"
+                outputs.upToDateWhen {false}
+                showStandardStreams = true
+            }
+        }
+    }
+
 }
 
 dependencies {