For IPCE, remove load net button from Footprint2DView, use the active control...

For IPCE, remove load net button from Footprint2DView, use the active control instead.  For Footprint2DView, add Track tool; allow user to either select a current view or create new when when choosing to show footprints;  move all work to the execute method in Footprint2DViewWorkOrder, this WorkOrder will not be undone.  Change WorkOrder to allow setting whether a specific WorkOrder is put on undo stack, save active ImageList and Control to project.  Restore toolbars for restored views when opening a project.  Fixes #2146, #4475, #4546, #4598.

git-svn-id: http://subversion.wr.usgs.gov/repos/prog/isis3/branches/ipce_FY17-Sprint1@7484 41f8697f-d340-4b68-9986-7bafba869bb8