Would like the ability to create a new sprint or move a spring anywhere in the sprint queue

[Scott Liebman]

Ref: 

1. JSWCLOUD-23278

Alternate suggestion:

A. Creating a new sprint - add ability to specify the position

1. at bottom (current default)

2. after sprint N1

3. before sprint N2

B. Moving a sprint

1. after sprint N1

2. before sprint N2

3. to bottom

4. to top