Capitalize random room & fix error response

See merge request !26

server.py

@@ -47,7 +47,7 @@ async def unlock_room(request: Request):
             if room.lower() == entry["room"].lower():
                 return json_response({"error": "Raum nicht freischaltbar."})
 
-    except KeyError:
+    except (KeyError, TypeError):
         room = get_random_room()
 
     # Make room name url-safe
@@ -110,7 +110,7 @@ def check_auth(request: Request) -> dict:
 
 
 def get_random_room() -> str:
-    return f"{r.word(include_parts_of_speech=['adjectives'])}{r.word(include_parts_of_speech=['nouns'])}"
+    return f"{r.word(include_parts_of_speech=['adjectives']).capitalize()}{r.word(include_parts_of_speech=['nouns']).capitalize()}"
 
 
 async def get_serial2room():