add page status to edit form
Added in dedifferntiation protocol.
Added in units/mL enum.
fix preview in object picker

* use search view to get same context the listing views expect
* fix search view to return object frame for types without columns even when querying multiple types
Merge pull request #338 from ENCODE-DCC/1560-edit-page-status

add page status to edit form
Merge pull request #341 from ENCODE-DCC/object-picker-preview

fix preview in object picker
Merge pull request #339 from ENCODE-DCC/1566-dedifferentiation

Added in dedifferntiation protocol. #1566
Whitespace
Merge pull request #340 from ENCODE-DCC/1344-units-per-mL

Added in units/mL enum. #1344
Merging in master.