can enchain a game after a game according conditions, playground-362
add associate game and condition, playground-362
add mission game and condition in backoffice, playground-362
know if mission has associate game in all theme, playground-362
fix cs
no association game-mission if endedgame n+1 < begingame n, playground-362
Merge pull request #39 from thomaroger/troger-feat-mission-playground-362

Add mission in backoffice, playground 362