When using an iPad with an apple stylus, finger touches now trigger the whiteout tool.
This behavior can be disabled by setting the environment variable AUTO_FINGER_WHITEOUT=disabled

* Auto white-out with a finger when using stylus

* Add AUTO_FINGER_WHITEOUT config variable

* Use local variable to remember if stylus was used and make behavior configurable

* Delete "stylus" property

* Make AUTO_FINGER_WHITEOUT on by default

Co-authored-by: Ophir LOJKINE <pere.jobs@gmail.com>

* Delete parseBool, add note about iPad/Pencil

Co-authored-by: ishabalin <ishabalin@apple.com>
Co-authored-by: Ophir LOJKINE <pere.jobs@gmail.com>

* add option to block tools

* use tool name instead of computing an id

Co-authored-by: Ophir LOJKINE <ophir.lojkine@auto-grid.com>

* require comma separated list as input of blocked tools environment variable

Co-authored-by: Ophir LOJKINE <ophir.lojkine@auto-grid.com>

* Log attempts to use blocked tools

Co-authored-by: Ophir LOJKINE <ophir.lojkine@auto-grid.com>

* fix syntax

* require tool names to not have a comma in them

* Update server/configuration.js

Co-authored-by: Ophir LOJKINE <pere.jobs@gmail.com>

* Added cursors

* Prepare cursor code for future settings to toggle cursors on or off.
Let cursor be the color the person has currently selected

* fix cursor on mobile (still won't display it in most cases as there is no hover on mobile but at least it won't throw errors)

* use correct size for cursor

* throttle cursor update rate to dramatically improve performance by eliminating congestion

* fix remote cursor size on desktop

* show own cursor by default and renove offset

* use svg as mouse cursor for pencil to be able to apply a reduced opacity to it and view our cursor

* don't throttle local cursor

* throttle local cursor at an independent higher rate. This could be made user adjustable for low power devices

* remove let and const from client-side code

* get emit count and emit count period from configuration

* reduce network cursor updates a lot to prevent instantly getting banned with the current defaults

* prevent eraser from deleting cursors

* use group inside of svg as drawing area and only delete elements inside it with the eraser

* use transform: translate to move cursors around instead of manipulating x and y directly

* fix: add socket ids to cursor messages

* fix incorrect remote cursor scaling and make local cursor visible again after it has been moved after being hidden due to inactivity

* create cursors in a proper fashion and keep them in a separate group

* scaling has been fixed in a1a5580

* move duplicated cursor creation code to function

* show cursors above content

* pass some of ther server configuration through to the client

* fix bug introduced in a833ce9

* allocate at most half of the allowed traffic to cursor updates

* remove debugging leftover

* use feature detection instead of ua sniffing

Co-Authored-By: Ophir LOJKINE <ophir.lojkine@auto-grid.com>

* fix regression where local cursor color was not updated on color change

* Define the cursor as a tool

* Remove the cursor tool from the UI

* Throttle remote cursor updates, not local ones

* Do not increment notification count on cursor move

* Use only one pencil icon

Use the same image for the pencil icon in the menu
and the pencil cursor that appears while drawing

* Add a test for the new cursor feature

* only stop drawing remote cursor when using some tools and always draw local cursor

* increase idle period before hiding cursor

* change idle duration back and set whether a cursor should be sent when using a tool in the respective tool

Co-authored-by: Robert Beach <rdbeach@gmail.com>
Co-authored-by: Ophir LOJKINE <ophir.lojkine@auto-grid.com>
Co-authored-by: ophir <pere.jobs@gmail.com>