LPS-45935 Import/export support for service settings

Hi Máté:

Here's the pull we talked about. It just adds support for services from Site administrations portlets and from site pages.

I've added a new section to the LAR format called services next to the portlets one. I also add new entries in the manifest to register services inside the LAR.

Right now the only way to control if a service is exported or not from site pages is by checking it's site administration portlet. In the import side, there's no way to control it: the service settings are always imported. Maybe we should provide an UI for this, but I've preferred to send you the pull than implementing new features in the UI that may not be used (depending on what you decide to do with the pull).

Take a look at it and we can talk again next Monday. In the meantime, if you need something I'll be reading my e-mail from the mobile. So if you have any blocking doubt just send me a message and I'll try to answer if I can.

Regards,
Ivan