Configuration class is used instead of instance for BaseConfigDialog and
ConfigurableBase
Introduce new property <intlib.version> used to determine Intlib OSGI
package version. DPUs should use <version> instead of <dpu.vesion>.
Extract/Transform/Load's context merged into DPU's context
Backend spring context file update
The way in which beans are obtained in backend updated
DatabaseAccess class removed, database facades are accessed using
@Autowired annotation
Merge branch 'master' of https://github.com/mff-uk/intlib.git

Conflicts:
	pom.xml
Merge branch 'master' of https://github.com/mff-uk/intlib.git