BUG: Handle invalid filename extension in the SaveAsButton ToolbarButton, and remove and restore the toolbar when saving or copying the plots.
BUG: Handle invalid filename extension in the SaveAsButton ToolbarButton, and remove and restore the toolbar when saving or copying the plots.

ContinuumIO/chaco,burnpanck/chaco,burnpanck/chaco,ContinuumIO/chaco,ContinuumIO/chaco,ContinuumIO/chaco,tommy-u/chaco,tommy-u/chaco,burnpanck/chaco,tommy-u/chaco