libdeng2|Widgets: Added method for querying RuleRectangle’s size in integer
libdeng2|Bank: Adjusted log levels of messages from Bank

Even at debug level it is not that helpful to output more than one
message per object load.
Cleanup
Cleanup
UI|Client: Draw post-busy transition in BusyWidget

This commit fixes the issue where the transition was not drawn
correctly when the sidebar is open. Previously the drawing was done
in GameUIWidget, which is affected by the game viewport.