fix CSP warning, remove inline style on moin-options-for-javascript #…

[RogerHaase]

…1816

[UlrichB22]

I have tested the fix and it works as expected. Maybe you can just add spaces and a semicolon to be compliant with the existing code style?

#moin-options-for-javascript { display: none; }

[RogerHaase]

thanks for spotting rookie error