Feature/german language support (#431)

* Update translation.json

Fixed some translation issues for German, made it more user friendly and common.

* Update translation.json

added updated block for serverStats

* Update translation.json

Added translations

* Update translation.json

Removed duplicate of "free":"Free"

src/locales/en/translation.json

@@ -1210,7 +1210,6 @@
     "totpRequired": "TOTP Authentication Required",
     "totpUnavailable": "Server Stats unavailable for TOTP-enabled servers",
     "load": "Load",
-    "free": "Free",
     "available": "Available",
     "editLayout": "Edit Layout",
     "cancelEdit": "Cancel",