update interview tree if user modality modified
give feedback on failed search, don't set active interview to null on close
add file to store help text
update TODO
Delete TODO
Merge remote-tracking branch 'patrick/develop' into develop

Conflicts:
	TODO
fix merge conflict
update TODO
WIP: detangling MVC classes in prep for building libraries
WIP: (detangling) simplify event callback usage
remove unnecessary includes
remove unnecessary include
use vtkNew where possible
WIP: separating out Alder into libararies
WIP: separating out libraries
WIP: separating out libraries
WIP: restructuring into libraries
WIP: getting CMake configged properly
WIP: cleaning up cmake
WIP: fix run time linking to shared lib