D-Net

added methods to get the available datasourceClasses, register a datasource and updates it's basic information

added constructor without parameters in Timezone class

moved Timezone to shared folder

added methods to get typologies and timezones

added dummy method to return countries without using cache.
enabled by parameter: services.repo-manager.repository.testing.mode

updated getRepositories method to return a Tuple of repositories by a specific country and (optionally) repositories for unknown countries.

getCountries methods now return a map

Added a tuple class

added methods to getCountries

Added support for history tokens and logout functionality