Co-authored-by: sents <finn@krein.moe>

* use join
* don't use arrow functions

Co-authored-by: sents <finn@krein.moe>

add board name for downloaded file

Replace mover tool by selector tool

Make navigating overflowing menu more accessible

(and add type annotations)

Bump handlebars from 4.7.6 to 4.7.7

Bumps [handlebars](https://github.com/wycats/handlebars.js) from 4.7.6 to 4.7.7.
- [Release notes](https://github.com/wycats/handlebars.js/releases)
- [Changelog](https://github.com/handlebars-lang/handlebars.js/blob/master/release-notes.md)
- [Commits](https://github.com/wycats/handlebars.js/compare/v4.7.6...v4.7.7)

Signed-off-by: dependabot[bot] <support@github.com>

Update dockerfile COPY to use node user

Fix: Spelling of a comment in server/check_output_directory.js

Show a list of recent boards on the home page

@nneka-nu : please do not change that again

Windows has case-insensitive file names by default,
but wbo itself handles boards with case differences correctly.
If you are using wbo on windows (which I do not recommend),
please set the case sensitivity flag of the folder where you store boards.
Alternatively, use WSL or Docker.

Bump y18n from 4.0.0 to 4.0.1

Bumps [y18n](https://github.com/yargs/y18n) from 4.0.0 to 4.0.1.
- [Release notes](https://github.com/yargs/y18n/releases)
- [Changelog](https://github.com/yargs/y18n/blob/master/CHANGELOG.md)
- [Commits](https://github.com/yargs/y18n/commits)

Signed-off-by: dependabot[bot] <support@github.com>

Fix Portuguese translations

Add Portuguese translations

Adds support for query parameter "hideMenu" (attempt #2)

This adds the ability to load a board with the menu hidden; it provides a form of "read-only" mode, but the key bindings are still active.
Use with, e.g.:
http://localhost:5001/boards/qYAZyGdym6HqjnfaGI4yNtpdx0IMHd9qp6kaJPwbJqE-?hideMenu=true

The alternative, proposed in #116, was to remove the menu completely, but this would require more substantial changes to board.js (which hangs on "Loading..." if the menu is removed).
Related to #150
Related to #116

Adds support for query parameter "hideMenu"

This adds the ability to load a board with the menu hidden; it provides a form of "read-only" mode, but the key bindings are still active.
Use with, e.g.:
http://localhost:5001/boards/qYAZyGdym6HqjnfaGI4yNtpdx0IMHd9qp6kaJPwbJqE-?hideMenu=true

The alternative, proposed in #116, was to remove the menu completely, but this would require more substantial changes to board.js (which hangs on "Loading..." if the menu is removed).
Related to #150
Related to #116

This reverts commit 71d8be5df1.