Created placeholders for Server quota and Site quota portlets.

Github issues #3 y #14.
Source formatting - actualizar nombre de los portlets
Actualizar paquete a org.lsug.quota
Add update method to QuotaListener
Update liferay hook package reference
Created service XML for basic quota service

Github issue #5
Added generated services for quotas

Github issue #5.
Changed portlet titles

By mistake, both portlets were named "Quota portlet".
Fixed package name and typo in service.xml.
Fix service.xml
Source formatting
Regenerate services