#58 edit "Done" and "To Do" in "Product Backlog"

[Klaus]

It should be possible to edit the done work (in work units) in "Product Backlog", additionally to "Sprint Manager"->Selected Sprint-> Tab "Users"->Choosen Member->Selected Task. This would improve the application's usability.
Proposal for a solution: On doubleclick on the cells "Done" or "To Do" of "Product Backlog" jump to "Sprint Manager"->Selected Sprint-> Tab "Users"->Choosen Member->Selected Task of the last choosen member. Add a "back" button on the panel, if the navigation was from this jump (which started with the doubleclick), and jump back to "Sprint Manager" panel before the jump.