Fixed a bug in generating titles for robots
Backside widgets not maintained properly

When a robot put something on a backside and then took it off again the
backside still contained the widget in its list of backside_widgets.
Fixed an error in reporting a warning.
Improved drop widget on box behaviour

It now splits the box into equal pieces and drops even on the border
work OK.
Fixed a bug in a robot removing widgets from nests

Wasn't keeping track of newly_created_widgets properly.
Removed error reporting in remove_backside_widget

And added a warning about a redundant calls

Some calls still raise an error if widget not there to remove.
Fixed bug with bird returning to unseen backside
Fixed another bird to unseen backside bug
Improved error handling/reporting
Fixed a bug in watched robots becoming hidden
Delivery simplified when caused by unwatched robot

Birds just put widgets on the bottom of the stack on a nest if given the
widget by an unwatched robot.
Fixed a bug copying a side

Manifested when a bird receives something and its nest has been copied.
Fixed a bird delivery bug

Just introduced.
Partial fix of bird delivery to nest copy
Fixed a bug loading nest copies

Guid sharing support added recently broke load of nest copies.
Added warning for ignored widget clicks

Because the widget is running. Warning produced only if TT.debugging.
Fixed a bug delivering to nest copies
Partial fix of bird delivery

When caused by unwatched robot
Fixed a typo

And reformated some code
Removed instrumented debug versions

Obsolete