research buff: clearance can now only be bought after first drop

[iloveloopers]

About the pull request

you can only buy clearance after first drop

Explain why it's good for the game

slightly prevents bald researchers from buying clearance before survivors get a chance to swipe their card and raise it for free.

to all neverplayers: after the dissections PR, research no longer gets passive income increase when buying clearance

Testing Photographs and Procedure

probably works

Changelog

:cl: add: Research clearance can now only be bought after first drop. /:cl:

[Git-Nivrak]

While at it remove buying papers

[iloveloopers]

gonna do this in a better way