Minor Mechanic bugfixes

You can now promote someone to Mechanic, or give them Workshop access by the ID computer.
Device Analysers now check for the right prox flag before scanning something.
You can no longer load duplicate designs onto the Reverse Engine.
Paper packs no longer have a blue examine text.
Merge pull request #1868 from ComicIronic/MechanicPort

Minor Mechanic bugfixes