This reverts commit c9ed69b8.

Drew some lines and it should be perfectly aligned now

Hopefully it's ok this time ^^'

* XOR-ing the label text into the edge of the mask as adviced by the
technician
* Mirrored all the layers so that the will appear correctly on the wafer

Reviewed Hagens changes after pulling, the mask is still ok it appears
after generating the GDS2 again.
The last DRC errors seem to have gone. Lets ship it.