Add parameterisation to named queries

[thislarz]

Independent of the target Language SQL or SparQL named queries should allow for named parameters. Parameters should be specified as a dict useing native python datatypes.

Example:

Follow up Problems:

• Injections attacts should be avoided.
• Update Documentation to demonstrate use.

[tholzheim]

pyLoDStorage/tests/test_queries.py

Lines 29 to 35 in 61ce933

	qm=QueryManager(lang='sql',debug=False)
	self.assertTrue(len(qm.queriesByName)>=2)
	sqlDB=tests.testSqlite3.TestSQLDB.getSampleTableDB()
	#print(sqlDB.getTableDict())
	for _name,query in qm.queriesByName.items():
	listOfDicts=sqlDB.query(query.query)
	resultDoc=query.documentQueryResult(listOfDicts)

[tholzheim]

SPARQL Injections attacts:

• see https://stackoverflow.com/questions/29601839/standard-regex-to-prevent-sparql-injection
• https://arxiv.org/pdf/1701.07671.pdf

[WolfgangFahl]

see #114

[WolfgangFahl]

see w3c/sparql-dev#57