Update to modSearchResults function

Previously, the modSearchResults function would return a vector called "BestMethod", but the model methods in this vector appeared in a random order, rather than ranked by their performance in accordance with the numeric stats returned in the "topMetric" vector. These updates to the modSearchResults function return top-performing models in the correct order, with the top-performing model appearing first in the list of models, and with each model method in the BestMethod vector corresponding to the values in the topMetric vector.