more consistent and predictable tpcc tables:

* strings will be like column names with numbers (e.g. WName1)

* 2 warehouse2
* 2*10 districts
* 15 items
* 45 customers (5 in W1D1, 4 in W1D2 and 2 all other districts)
  - in district 1 and 2 (warehouse 1) some last names equal
* 45 history entries (one for each customer)
* 45 orders (one for each customer, first in every district warehouse 1 is supplying and for
   all others warehouse 2 is)
* every order is a neworder
* 2*15 stock entries
better newOrder python script
[WIP] improves TPCC stored procedure tests