Made editor tools their own class which autoload from the tools folder.

Fixed instances of the playertype referring to "portal" instead of "portalgun".
Removed baseentity from the saneents listing.
Fixed game hud drawing which refers to a gamemode type that doesn't exist.
Changed hud drawing to use a series of overridable strings.
Merge branch 'master' of https://github.com/GoonHouse/Marin0SE