Fix conflict between `omitmain` and `cookie` i18n options
Fix conflict between `omitmain` and `cookie` i18n options

... in header language selector. Refs #1401

Roffun/Cotonti,Cotonti/Cotonti,Cotonti/valencia,gorlemik/Cotonti,Cotonti/Cotonti,gorlemik/Cotonti,Cotonti/valencia,Cotonti/valencia,Roffun/Cotonti,gorlemik/Cotonti,gorlemik/Cotonti,Cotonti/Cotonti,Roffun/Cotonti