Others:
*Add cluster size in SD card info
*Add error message for emmc read failure. Also fix return value.
*Added more comments and more constant naming
*Remove option to ignore errors and abort right away.
In the end what's the point if you end up with corrupted backup.
*Always create partial.idx before running on errors.
*Allow forced partial dumping on exFAT with large space, by creating the correct patial.idx file
*Some cleanup
* Make button check delay 1s to avoid button repressing from "button ip" state
* Dumping: Fix part logic and honor user actions on ignoring errors
* Add time taken to dump emmc
Write error to sd is now fatal as per FatFs guidelines.
Let the user choose to continue or to abort and try again.
Add a message to let the user know that we calculate free space
