Does Scrumwise have keyboard shortcuts?

Yes, here are the most important keyboard shortcuts:

Windows

Add: Ctrl+Insert and Ctrl+Shift+Insert
Add multiple backlog items or tasks: Ctrl+Alt+Insert
Quick add backlog items or tasks: Alt+Insert
Delete: Delete key
Cut, copy, paste: Ctrl+X, Ctrl+C, Ctrl+V
Select all: Ctrl+A
Close dialog: ESC
Cancel edit: ESC
Scrolling: Arrow keys, Page Up, Page Down, Home, End
Search in current page: Ctrl+F
Search in all projects: Ctrl+Shift+F
Next, previous: F3, Shift+F3
Select previous / next backlog list: Ctrl+Alt+Left, Ctrl+Alt+Right
Tab selection: Ctrl+Shift+1, Ctrl+Shift+2, etc.
Focus on backlog list: Hold down Shift or Ctrl and click on a collapsed backlog list, or in the header of an expanded backlog list, to expand this backlog list and collapse all other backlog lists.

Mac

Delete: Delete key
Cut, copy, paste: Cmd+X, Cmd+C, Cmd+V
Select all: Cmd+A
Close dialog: ESC
Cancel edit: ESC
Scrolling: Arrow keys, Page Up, Page Down, Home, End
Search in current page: Cmd+F
Search in all projects: Cmd+Shift+F 
Next, previous: Cmd+G, Cmd+Shift+G
Tab selection: Cmd+Alt+1, Cmd+Alt+2, etc.
Focus on backlog list: Hold down Shift or Cmd and click on a collapsed backlog list, or in the header of an expanded backlog list, to expand this backlog list and collapse all other backlog lists.