change for ontology xsd:long
Support for xsd:long in mapping and ontology
fix index in RDBMSSIRepositoryManager
Added test for xsd:long and modify xsd:date, xsd:time
fixed tests for xsd:date and xsd:time
add support for xsd:year in SPARQL query functions
add support for xsd int, negative integer, non positive integer, positive integer, unsigned int, float
add  boolean evalutation for float and bigint
Fix tests with integer and float involved
Fix stockexchange test
Test logback files to error
FILTER in sparql return rdfs:Literal as default value
*Change str function to return literal *Modify datatypes tests adding case for xsd:string  *Modify stockexchange test to use xsd:int
use xsd:integer in stockexchange tests
use xsd:integer in stockexchange tests
Add test case for H2 Datatype date
Merge branch 'develop' into bugfix/DatatypeSupport
Merge branch 'bugfix/DatatypeSupport' into develop