adds attribute universal for constraint object
Sort view constraints by category type
Remove a print statement
Save state of view constraint canvas
Ensures canvas height can handle large amounts of user added constraints
merges develop into display_constraints
Ensure index value is an integer
Increase scrollbar height if more than 20 user added constraints
Fix room selection drop down bug
Sort the room selections
Merge pull request #69 from donnell74/display_constraints

Display constraints