Add view mode and view/edit toggle

[amoeba]

For sharing builds, why not implement a view mode (that can be switched to Edit mode and back) that provides a higher density display of a build. I see lots of people describing bulids in plain text in various forums but maybe they'd use the planner's view of it it had a less busy "view mode".

[amoeba]

How should I deal with components that are made for View mode versus those made for Edit mode? There's going to be lots of shared stuff like getters (but not setters). I think the way to go is to have an entirely unique component tree for View Mode.