[maven-release-plugin] prepare release 1.9.8
[maven-release-plugin] prepare for next development iteration
Back ported TRUNK-3586 Update unit testing environment to use mocks

(cherry picked from commit 6ca3d0b488cdb88a150e79a7baf63e594a46a261)

Conflicts:
	api/src/test/java/org/openmrs/module/ModuleUtilTest.java
	web/src/main/java/org/openmrs/web/Listener.java
TRUNK-4280 | Changed the date format in getValueAsString() method of Obs class to get date in yyyy-MM-dd format