changed the sign of the stressed surface so that it cancels out binding
energy properly.
Fixed some boundary const issues. Fixed so that a proper assertion is given if no reactions are active. Fixed some app bones issyes. Stressed surface now takes a boundary and then checks if its an edge. Got issues with dynamic casts of const values. Safer than to let a user dynamic cast anything to edge. Started working on an issue with reactions in the edgeLayer of stressed surfaces asking for saddle energies.