Add binding mode displaying only interaction type not residues

[talagayev]

Describe the feature you would like to have

Currently for the binding modes we calculate a binding mode according to the interactions present between a functional group and a residue.

Thus if a phenyl ring interacts with two residues Ile and Val both would go into the binding mode and losing one interaction would lead to another binding mode

Binding Mode A: Val + Ile
Binding Mode B: Val
Binding Mode C: Ile

The idea is that if a certain type of interaction is present, the binding mode would be the same regardless of the residues with which it interacts. Thus, Binding Modes A, B and C would not be distinguishable.

[talagayev]

Adressed by #170