Add email message for item entering blackout
Refactor WorkflowManager notifyOfX into new class

Move emailing methods into WorklfowEmailManager
Add notifyOfBlackout method
Call notifyOfBlackout when item enters blackout
Fix Typo in curator approval options menu - archival->archiving
Update claimed item blackout page to include reject/edit/return buttons, like claimed item curation page

The functionality and text for these buttons already existed in EditMetadataAction, so I refactored AfterPublicationAction to be a subclass of EditMetadataAction.
Add i18n strings for missing blackout queue headers
Add missing blackout-reauth queues to mytasks.task.order
Send payment error emails at every return of chargeCard()
Rename PostMethod object from get to post
Rename PostMethod object from get to post
Fix incorrect prevention of null pointer exception: change '== null' to '!= null'
Add notifyOfCuration back to WorkflowManager for compatibility
Add email for items entering reauthorization payment
Add notifyOfReAuthorizationPayment - emails curators with payment_needs_reauthorization message
send email on entering reauthorization
Merge branch 'dryad-master' into pub_blackout_fixes

Conflicts:
	dspace/modules/payment-system/payment-api/src/main/java/org/dspace/paymentsystem/PaypalImpl.java

	Conflict was in rename of 'get' to 'post'
2221 : if-modified-since for the htmlmap pages
Change sitemap to remove caching on if modified since request
Add cover images for GMS journals
Add cover display for 6 GMS journals from package page