* added whiteout icon made by Freeplk on flaticon.com

* added whiteout fluid icon (public domain).

* Added whiteout tool as secondary function of pencil tool.

Co-authored-by: Robert Beach <rdbeach@gmail.com>

* shrink icon width using stroke

* shrink whiteout icon properly

* shrink whiteout fluid icon

* reduce number of allowed messages

* simplify

* remove layer code

* renmove show/hide marker code

* change white to #ffffff

* make toggle function compatible with current implementation

* Revert changes unrelated to the whiteout tool

* Refactor secondary tool logic between ellipse and pencil

* Add translations for the whiteout pen

* Fix tests

Co-authored-by: Robert Beach <rdbeach@gmail.com>
Co-authored-by: ophir <pere.jobs@gmail.com>

(@rdbeach)