fixing css issues
Update app.js

changed language code fron ch -> se. This will probably brake the link to the corresponding flag icon until that is updated as well.
Edited content of the exercises - to test how these new words and symbols can be mapped and looked up.
fixing flag
Merge remote-tracking branch 'mat/patch-1'
fixing translations
refactoring and splitting things between client and server. Separating translations and games.
allowing new translation updates instead of only insert it