show day-of-week alsowhen bluetooth is not connected
make display language (for day-of-week) a compile-time-option instead of hardcoding it (fallback to english)
remove warnings for CCS compile (different error numbers)
show day-of-week also when bluetooth is not connected
Revert "show day-of-week also when bluetooth is not connected"

This reverts commit 8bae95fed68a07938445bb339fd5b0db92409053.
Revert "Revert "show day-of-week also when bluetooth is not connected""

This reverts commit ed562ef8d6d54471bbac11ad10ddce2ed4f5efae.
show day-of-week also when bluetooth is not connected
remove CCS compile warnings due to type cast