[OE-3856] removed unused model
[OE-3856] table versioning changes
Merge branch 'develop' into feature/table-versioning
[OE-3856] added comments_rtt field to operation element table.
[OE-3856] audit changes
[OE-3856] soft deletion
[OE-3856] changes to support soft deletion on all models.
[OE-3856] soft deletion
[OE-3856] removed unnecessary statements
[OE-3856] removed unneeded migrations
Merge branch 'develop' into feature/table-versioning
Merge branch 'release/1.5' into feature/table-versioning
Merge branch 'develop' into feature/table-versioning

Conflicts:
	controllers/DefaultController.php
	models/Element_OphTrOperationbooking_Operation.php
[OE-3914] fixed collation
[OE-3914] fixed collation
default admission time on version tables
Merge branch 'develop' into feature/table-versioning