fix #24574

use flat and sharp symbols in dialogs and tooltips
some more changes for fix #24574

these may need further changes though to become translatable
Only ASCII in .cpp files

using \u266d for b and \u266f for #
fix typo
Merge pull request #694 from Jojo-Schmitz/24574-flat-and-sharp-symbols-in-tooltips-and-dialogs

Use flat and sharp symbols in tooltips and dialogs