All users & other users field calculation improvements

[coni2k]

Currently T-SQL functions return average of rate, rating & value fields.
On business layer, OtherUsersTotal fields are calculated based on these.
And on client-side it does the final calculation.

Instead of this, T-SQL could directly calculate the Totals and send them to the client-side to handle the rest.

[coni2k]

Now T-SQL calculates ResourcePoolRate, IndexRating & NumericValue, sum of User level fields.
Business layer doesn't make any other calculation.
Client-side gets Total and calculates the final average.