Sqlserver support (#1053)

* made some tests sqlserver ready (No effective code change in src/main)

* FIX enhance packages and let all testcases inherit from BaseTestCase, so that they can be launched directly from eclipse

* ADD sqldriver in pom and datasource

* FIX: DDL-generation for sqlserver - not yet all sqlserver tests passing
mvn verify -Ddatasource.default=mssql => Tests run: 1980, Failures: 22, Errors: 44, Skipped: 16

* BaseDdlHandlerTest checks against correct sqlserver-ddl now

src/test/java/org/tests/rawsql/TestInsertSqlLogging.java

@@ -11,8 +11,6 @@ public class TestInsertSqlLogging extends BaseTestCase {
   @Test
   public void test() {
 
-    if (isSqlServer()) return;
-
     Ebean.delete(AuditLog.class, 10000);
 
     String sql = "insert into audit_log (id, description, modified_description) values (?,?,?)";