[TASK] trying to remove page path from asset path
[TASK] refactoring of library service + configuration/wizard classes
[BUGFIX] fixing typo
[BUGFIX] fixing abstract service class
[BUGFIX] fixing singleton interface extension
[FIX] temporarly deactivating library service (uriBuilder/request issue)
[TASK] Changing inline asset generation

The controller based approach was not suitable for generation of
the static inline asset file. This switches to a standalone fluid
view + cache manager based approach.
[BUGFIX] fixing flexform language items retrieval + drawItem hook
[BUGFIX] page layout hook fix, 2nd try
[BUGFIX] fixing path to flexform language items setup keys
[BUGFIX] fixing service exception namespace
[BUGFIX] fixing cache handling
[BUGFIX] fixing content object renderer RC

Because the Fluid standalone view is creating an own instance of
the conent object renderer, the one from the controller gets
overridden. Therefore, the flexform values are unavailable.
[BUGFIX] fixing type hinting in library service
[BUGFIX] fixing version configuration array access
[BUGFIX] fixing library version configuration array access #2
[TASK] adding css configuration getters + external requirement
[TASK] performing cleanup tasks
[TASK] finishing refactoring
[BUGFIX] content object isn't available in DI methods