Add ko to dropdown

[zzhaobraze]

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[josh-mccrowell-braze]

@zzhaobraze Should we make the dropdown list alphabetical (always keeping EN at the top)? So the order can be:
EN
ES
FR
JA
KO

@iaraltkorn Any thoughts?

[zzhaobraze]

@zzhaobraze Should we make the dropdown list alphabetical (always keeping EN at the top)? So the order can be: EN ES FR JA KO

@iaraltkorn Any thoughts?

reordered

[iaraltkorn]

@zzhaobraze sorry i was offline - this looks good. thanks