Rename drama.md to story of unixhub.md

"drama" is just bad name for this kind of story, as it does not represent unixhub-, nixers community nor NeoTerra's group in a good light. (I've been from unixhub from the day one)

From the point of view I look at this, this is just here to tell why unixhub was removed from side bar. There for it should be properly named and the new name represents all the communitys (read /r/unixporn) better.