New professions: Convict and Lawyer

This PR adds 2 new professions to the game:
Convict: Costs 0 point, starts with striped clothing, glass shiv and 1 point in melee.
Lawyer: Cost 1 point, start with businessman-like clothing, briefcase, 1 point in bartering and 2 points in speaking.

Also in this PR is new items for those professions:
Striped shirt and pants
Briefcase (cumbersome but provide decent storage)
File (Useless documents, for flavor only)