- Remove the delay when opening the math keyboard in favor of an
explicit check

- Reset shift key when switching between layers

#744

- Distribute the math editor module to different files

- Replace top layer with inline editor
- Make keypad and keyboard available for TextAreaMath

#553

Read-only math fields are displayed without borders

Uses external software 'MathLive'.

Distpacker issues with mathlive have been solved in a custom 
distpacker.ts in scripts-folder. This is now used instead of the 
distpacker from the npm package.