PostgreSQL JDBC driver version bump 

Now using version 9.3-1102-jdbc41(for Java 7/8). See the [documentation](http://jdbc.postgresql.org/download.html).
Please note the file: ./installs/resin-4.0.41/webapps/servlet/META-INF/maven/hello.world/world/pom.xml also contains PostgreSQL JDBC driver dependency but it seems it is generated. So I'm not sure where it gets the dependencies. Someone should check.