Remove file after its about 10th merge-related resurrection
Add default output for empty work package properties…


According to the specification there are properties on the embedded overview tab, which are rendered in a fixed order even if empty. For those ‘-‘ should be rendered as a default if empty.
Update date property output if only a start OR due date is given
Remove redundant work package properties from overview tab
Switch ‘date missing’-labels to lower case (according to prototype)
Add some unit tests for property rendering on overview tab
Add unit tests for date property on overview tab
Merge pull request #1587 from opf/fix/details-tab-properties-13694

Fix/details tab properties 13694