Change: All requested are cached. Previously not cached items are removed upon cache update.

git-svn-id: https://svn.typo3.org/TYPO3v4/Extensions/ics_libnavitia/trunk@77535 735d13b6-9817-0410-8766-e36946ffe9aa
Feature: Instantiated nodes are put in a repository by externalCode or idx.
Feature: Recall node instance from repository in node getter when the node have a related idx or externalCode attribute.

git-svn-id: https://svn.typo3.org/TYPO3v4/Extensions/ics_libnavitia/trunk@77537 735d13b6-9817-0410-8766-e36946ffe9aa