Made run_server.py executable.
Made run_server.py executable.

* I've been meaning to do that since I first created that script...
  Which was one of the first commits to Galah I think.

ucrcsedept/galah,brownhead/galah,galah-group/galah,ucrcsedept/galah,brownhead/galah,galah-group/galah,galah-group/galah,brownhead/galah,ucrcsedept/galah