Increase pipeline_id_lims column width
Remove NPG tables from project

The NPG tables aren't directly related to the warehouse builders.
Keeping them as part of this project will mean that schema changes
to the table will need to be made through the builders, or that the
structure and actual schema of the tables will get out of sync.

In addition, this allows NPG to populate their own tables in a
given environment before the builders are deployed, without risking
us dropping the tables.
Merge pull request #7 from JamesGlover/next_release

Schema updates