New method to get IDs of all sub-processes
New methods for ProcessInstance API
Merge branch 'master' of github.com:idega/com.idega.bpm into BRANCH_PLATFORM_5

Conflicts:
	src/java/com/idega/bpm/exe/DefaultBPMProcessInstanceW.java
Changed warning
Made possible to provide custom receivers
Using JBPMContext to load proc. definition
Using constant
Merge branch 'master' of github.com:idega/com.idega.bpm into BRANCH_PLATFORM_5
Providing case's date and time
New method: process owner
Improvements
Merge branch 'master' of github.com:idega/com.idega.bpm into BRANCH_PLATFORM_5