Moved from -02 to -03
Added SoftThresholdOp
Changed SparseMatrix Index type from int to long
removed compute_ratings functions (useless)
Added pointers to useful temporary variables in the WorkspaceTrain
struct
Some modifications to the ./sideinf train help message
compute_rmse now takes the weighted similarity matrix has input
Added soft-thresholding in sgd function
Added buildWeightMatrix function