Revert "LPS-45033 My eclipse doesn't seem to give these warnings"

This reverts commit dad506281d51ee0678e9ce547d5f21290078c0b5.
Revert "LPS-45033 As a developer I'd like to be able to register StagedModelDataHandler impls from OSGi"

This reverts commit 5dd078919f24f2f2a80a6c7124f77e264529638f.
Revert "LPS-45018 As a developer I'd like to be able to register PortletDataHandler impls from OSGi"

This reverts commit 9446475f589f571310c1726e47fa03d61bfa31d5.
LPS-45036 Allow to append more sections from a hook via the following properties sites.form.add.miscellaneous and sites.form.update.miscellaneous
LPS-45036 you need to also update SUPPORTED_PROPERTIES
LPS-45038 - Consume br element only if it has prev and next sibling
LPS-45038 SF
LPS-43709 Add Field.ASSET_VOCABULARY_IDS as searchContext attribute
LPS-43709 Sort
LPS-44995 Use LinkedHashMap to iterate terms in order
LPS-45040 Do not export file entry types when exporting external repository folder
LPS-44342 Remove duplicate breaking change title and format date fields
LPS-44599 Edit breaking change
LPS-44010 Modify SubscriptionSender to be able to send in-portal notifications (as opposed to only by e-mail) to runtime subscribers
LPS-44010 Improve subscription sender to support website notifications when the configuration is bulk=true
LPS-44010 I think this does the same thing
LPS-44010 SF
LPS-45033 SF
LPS-45036 Forgot DTD