issue#86 - Correct the table names in custom sql

Hi Zsaga,

I modified the names of the mentioned tables to have the correct capitalization.

Please review.

Also I would say that there are some source format that should be done in this file:
-lines exceeding 80 characters,
-spaces after "(("
- there is a {} used at a statement: SELECT {timesheet_TaskSession.*}

Can we talk about this tomorrow?

Thanks,
Adam