subredditManager.options.applySuffixToMulti

to support foo/bar+baz/qwop style pseduo-shortcuts.  aka the "@noahjk special" option

when enabled, a+b+c/new creates a dropdown of a/new, b/new, c/new
when disable, foo/bar+baz/qwop creates a dropdown of foo/bar, baz/qwop