Update de-CH.coffee

Hoi zeme, i übersetze mega gern und wieni gseh ha isches no es reechts Stück wo z übersetze isch. Ha mol agfange, i hoff ihr findeds guet. :)
Fixed the file not 'changing' when overwritten. It was a caching issue.
Fixed the cloudflare config to be in the environmental variables.
Clearing backups of old models when saving new versions of versioned models.
A bit of error logging for #1220.
Showing expired profiles to admins.
Fixed bug showing spell palette for languages missing any code snippets.
Some tweaks to the guide for the benefit of the criss-cross docs, and hopefully others as well.
Attempting to fix G+
Fixed gplus login.
Turning off source maps for now because they're wrong.
Changed the versions history modal to show name and date.
Updated the patches script to handle some invalid patches.
Patch modal handles invalid patches.
Send BCC email to employer when contacting candidates
Messing with marks.
Migrating from tileGroupNumber to tileGroupLetter.
modifying the employer page to be more explanatory
Merge branch 'master' of https://github.com/codecombat/codecombat
Merge pull request #1184 from greyhusky/patch-1

Update de-CH.coffee