Match all variables "Importance" with all 41 variables
1) Removed IntAADT for glmnet
2) Writing varImpStandard function
offset and no offset formula have same main structure. The log predictor and offset variable with be specificed in the model matrix individually.
Special treatment of log(TotalT5YearInM) in the formula
1) No step-wise model selection for now
2) use the same fmla.string
varImpStandard for dummy variables