Rewrite Python script for watermarking PDFs in Ruby

[hweng]

Descriptive summary

Since our DAMS code is in Ruby, rewrite the Python watermarking script for PDFs in Ruby.

Work is expected to be done by the end of Summer 2019

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Related work

• R&D: Investigate how to integrate watermarking and disabling download for VRR damsmanager#299
• VRR PDF watermarking: Use python script damsmanager#320

[hweng]

@gamontoya Why close this ticket? I remember our discussion yesterday is to explore the Ruby way to add watermark to PDF , and if it is possible will replace python script with it as long term solution? Is that right?

[gamontoya]

Yes, but this is an R&D ticket so I was going to create a new ticket with the official task. I'll just re-write this ticket.