Fix selectors and rules on post types, pages, and posts in some situation.

Also use is_single on query instead of global.
Keep the stable version we have in the svn repo inside the git repo too.
Merge branch 'feature/fix-selector' into develop
GitHub dropped the downloads section so we're not building the zip anymore.

So drop the makefile and ignore rules for it.
Bump version for release.
Merge branch 'release/0.9.3'