Frank e1f14628b0 4LD + rotary hotfix: corrupted display on esp32 ...

This s a temporary fix for display problems (corrupted display, sometimes crash). These problems exists since 0.14. as display updates are now running in a separate task.
The fix is still incomplete.

If nothing else works, you can use the 0.13.x behavior by compiling with `-D FLD_ESP32_NO_THREADS`

* fixing a few unsafe string operations and non-initialized strings
* fix max length for "two lines" names
* make sure that display methods are exiting early if display is not configured
* rotary_ALT : additional checks to ensure that drawing on the display does not overlap with redraw
* added some safeguards to prevent overlapping display redraw operations
--> Actually this should use semaphore/mutex instead of global booleans -> Still on my toDo list.

2023-02-02 18:37:13 +01:00

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