! Incorrect quotes in the code meant it wouldn't save properly, only in ...

...no-deny and only for groups without manage boards permission, though only discovered after far too much investigation because all possible permutations had to be examined and retested rather than adequate information being given in the first place and irrelevant tangents involved in discussion. Fixes #1341

Signed-off-by: Peter Spicer <sleeping@myperch.org>