improve puzzles
sk "slovenčina" translation #7294. Author: kubozto.
da "Dansk" translation #7296. Author: skij.
vi "Tiếng Việt" translation #7298. Author: zipdang04.
vi "Tiếng Việt" translation #7299. Author: zipdang04.
Update LangList.scala

a bucketload of constructed languages
more progress on puzzles
Merge branch 'master' of github.com:ornicar/lila

* 'master' of github.com:ornicar/lila:
  Update LangList.scala
improve puzzle frontend
give puzzles auto increment IDs
puzzle UI
Calculate puzzle min depth using BFS
produce a flat line from the tree
more work on puzzles..
nn "Norsk nynorsk" translation #7311. Author: strauman.
nn "Norsk nynorsk" translation #7312. Author: bjagus.
remove unused translations
more on puzzles
moar puzzle stuff
replace dommy and cljs-ajax with jayq