[OE-3856] table versioning
[OE-3856] soft deletion
[OE-3856] migration consolidation
[OE-3856] removed unnecessary statements
[OE-3856] changed model inheritance to use the versioned base model
Merge branch 'develop' into feature/table-versioning
Merge branch 'release/1.5' into feature/table-versioning
[OE-3856] fixed double header
Merge branch 'develop' into feature/table-versioning

Conflicts:
	views/default/view.php
[OE-3914] fixed collation
fixed db references
Merge branch 'develop' into feature/table-versioning