[Dev] lastDynamicBlock

[John Anderson]

Hi Donn:

I'm eliminating Globals.mainView. Instead there's going to be a 
Globals.mainViewRoot, which contains a tree of blocks for the current 
application UI, as in the top most "trees of blocks" that we discussed. 
Also there's going to be a Globals.views, which is a list of nested 
trees of blocks, where each level has an event boundary. So typically 
Globals.views[0] is the old Globals.mainView (but might change as we 
change the top UI), Globals.views [1] is the new sidebar summary detail 
view, Globals.views[2] is the new detail view -- hope this isn't too 
confusing.

So I've updated all the references to Globals.mainView except for 
lastDynamicBlock. Can I move lastDynamicBlock to wxApplication, or 
should it belong to mainViewRoot, or Globals.view[0], or something else?

John