* changed the weight fraction calcualtion for mixtures, the weight fractions
  are now taken as the coefficients from the batch table
* updated the reactant and chemical classes to accomodate new columns in the
  database
* changes the format for displaying the numbers in listctrls in the input panel
* updated the entries in the database for ludox 30, and 40 to accomodate
  the changes made in the calcualtor ie changed the coefficients in the batch
  table to weight fractions