Quill module small problems

[lpatiny]

• If you insert a formula at the beginning of a line the box is outside the module

• We will need superscript and subscript - Options are described on : https://quilljs.com/docs/modules/toolbar/

• Can not change between left, center and right allignment

• I would suppress the border, especially in render mode only

• There is an incompatibility if the old rich text editor is also present. When you click on the Quill editor the previous old menu appears.

• If 2 Quill modules are present you loose the focus after the debouncing time.

• Could add heading 3 and 4 as well

[stropitek]

https://github.com/kensnyder/quill-image-resize-module
https://github.com/kensnyder/quill-image-drop-module