Refactor; number of elements per page in Library
Minor fix in the variable names
Updated to Kurogo 1.8.3; bugfix library module

- Updated code and structure for Kurogo 1.8.3
- Bugfix for library module.
	The json output was occasionally broken.
	The reason is not clear and the workaround at the moment
	is an overwritten function. As soon as the reason is clear
	the hack is going to be removed.
Minor bugfixes and update to kurogo 1.8.3
Library module; added nebis and sbt numbers

Added NEBIS and SBT book numbers to the output of the Library
module.
Bugfix in the Library module

Journal search requests where broken for patterns containing
spaces.