[#78198458] Delete redundant GridView titles by not using OSCollapsibleView in appropriate instances.
[#78198458] Add tooltip to, and better position remove button in Inspector Gadget.
[#78198458] Remove parent test.
[#78198458] On removeButtonClicked, set EditView to null view.
[#78198458] Do not show object on dropzone drop, due to item currently being reparented.
Merge branch '78198458_GridViewBugFixes' into develop