Custom time period format

Description of the enhancement required:

Include a way to format weekly dates by Start/date - end/date such as in excel. 

A story for why they want the enhancement:
Currently we have a gantt chart view in Excel which shows run dates on the columns with the activity detail in the middle of the grid. It is easier for us visually to see a run date rather than just start, end date of a week or the week number which we do not use often as a part of their business operations.