* Forbid inserting object and iframe tags via PlainTextInput
* Add optional browserMode parameter to Editor
* Create new ts modules for three editor instances
- note-creator for AddCards
- browser-editor for the editor in the Browser
- reviewer-editor for the EditCurrent
* Revert "Forbid inserting object and iframe tags via PlainTextInput"
This reverts commit ab90ae8194494d883a1863126496e2d8f332509e.
* Refactor browserMode to editorMode
* Move new editor variants inside /ts/editor directory
* Fix typo
