#649: Revert styling changes for inline labels in admin_options.php.

(reverse-merged from commit 700b11ca27c2c3c64842666e3642e9ebf0f6edfa)
#649: Apply CSS class "conl" to inline labels for radio buttons (styling is already done).

Fixes #649.
Merge pull request #1 from fluxbb/8288b729c0946cad0cc75a3588ee45a385fd577f

Sync test