GeoStore wrapper for OpenSDI-Manager2

* Include proxy version code based on Spring service
* Use it in the GeoStore wrapper
Rest Facade changes

* Implement it as a servlet
* Prepare to add customized proxies
* Rename it as rest-facade module
* Add target folders to `.gitignore`
* Changes related in configuration files
Remove old code.

Remove old URLFacade service definition and implementation
Spring MVC dispatcher fix

Enable Spring MVC controllers again.
Minor changes

* Include last `/` on `baseFolder` if is not present
* Add date and time to log message
Merge pull request #3 from alediator/geostore_wrapper

Rest facade and minor changes