Updated JDK settings.
Fixed an issue with powermock loading the wrong java agent when attempting to set up static mocking.
Moved REST WS base resources from backbone to commons module.
Moved Payment Mode view to common customizable instance view in backbone. Updated models to use base model types as well.
Removed payment mode add-edit view (commented out) as this is now handled by the base backbone form view. Added the missing toString method to the payment mode model.
Merge branch 'develop' of https://github.com/OpenHMIS/openmrs-module-openhmis.cashier into develop
Final fix on #cash-144