Updated and improved the Danish site
Minor details in DA and ES

Danish:
sect2_aboutbody: Made a proper phrasing.
sect3_video_blurb: Inserted comma.
sect6_developers: Changed obnoxious wording.

Spanish:
_comment: Removed English only comment.
update zh_TW translation
update zh_HK translation
change direction to rtl
Verify Arabic as good translation (Tanjoodo)

This commit resolves issue #49.