Remove these unused props_*.cfg files.
One more unused config file!
Prop grid now manages args for both thing type and special.

This makes arg labels do more or less what you'd expect when mucking
with a thing's type and special.

Also fixed the ZDoom configuration so that a thing's type is actually
defined as such, and the [...] button works correctly.
Don't reload the property grid when toggling "show all".

I've lost work this way!  Instead, ask each property to decide whether
it should be visible now.
Really not feeling vector::begin/end.
Use a combobox for string properties with values, like renderstyle.
Merge pull request #126 from eevee/propgrid-config-harmony

Joint config/propgrid fixes.
Automatically load any WADs in the root of a zip/dir.

This matches ZDoom's behavior, and makes life easier for authors who use
separate resource WADs.
- More commenting and headering
- Create sector will no longer always create a new sector if the existing sector was already valid and would not be changed by the operation
Merge branch 'master' of https://github.com/sirjuddington/SLADE.git
Merge pull request #127 from eevee/load-wads-inside-zip

Automatically load any WADs in the root of a zip/dir.
Merge branch 'master' of https://github.com/sirjuddington/SLADE into Music