Summary: Fixes T5677. - Instead of using `sequence == 0` to mean "this is the backlog column", flag the column explicitly. - Migrate existing sequence 0 columns to have the flag. - Add the flag when initializing or copying a board. - Remove special backlog logic when reordering columns. Test Plan: - Migrated columns, viewed some boards, they looked identical. - Reordered the backlog column a bunch of times (first, last, middle, dragged other stuff around). - Added tasks to a project, saw them show up in the reordered backlog. - Initialized a new board and saw a backlog column show up. - Copied an existing board and saw the backlog column come over. - Tried to hide a backlog column. Reviewers: btrahan Reviewed By: btrahan Subscribers: epriestley Maniphest Tasks: T5677 Differential Revision: https://secure.phabricator.com/D10189
		
			
				
	
	
		
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			3 lines
		
	
	
		
			101 B
		
	
	
	
		
			SQL
		
	
	
	
	
	
ALTER TABLE {$NAMESPACE}_project.project_column
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  ADD properties LONGTEXT NOT NULL COLLATE utf8_bin;
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