* fix(dropdown_menu): Keyboard navigation
* fix(icon_button): Add aria-pressed attribute
* fix(privacy_dropdown): Make accessible
* fix(emoji_picker_dropdown): Make accessible
* fix(icon_button): Support tabIndex
* fix(actions_modal): Remove icon from tab order
* fix(dropdown_menu): Add role=group
* fix(setting_toggle): Toggle via space key
* fix(dropdown_menu): Remove redundant handling of Space key
* fix(emoji_picker_dropdown): Remove redundant Space key handling
* fix(privacy_dropdown): Remove redundant Space key handling
* fix(status): Switch to article and add aria-posinset, aria-setsize
* fix(status_list): Use role=feed and pass more ARIA props to Status
* chore(eslint): jsx-a11y/role-supports-aria-props
* fix(dropdown_menu): Open as modal on mobile
* fix(dropdown_menu): Open modal on touch
* fix(dropdown_menu): Show status
* fix(dropdown_menu): Max dimensions and reduce padding
* chore(dropdown_menu): Test new functionality
* refactor: Use DropdownMenuContainer instead of DropdownMenu
* feat(privacy_dropdown): Open as modal on touch devices
* feat(modal_root): Do not load actions-modal async
`height: 100%` in `align-self: stretch` flexboxes doesn't work on Safari < 11.
https://bugs.webkit.org/show_bug.cgi?id=137730
This workaround uses flexbox instead of `height: 100%` to stretch height.
- Be less strict about the Ruby version, which resolves a build failure.
- Add libidn as a dependency (until Nanobox adds idn-ruby to the list of gems with a dependency on it).
- Remove redundant bundler commands (Nanobox's Ruby engine handles these things cleanly on its own, now).
* fix(column_header): Invalid ARIA role
* fix(column): Remove hidden nodes from the DOM
* refactor(column_link): Remove unused property hideOnMobile
* fix(column_header): Use aria-pressed
* fix(column_header): Make collapsed content not focusable, add focusable property
* fix(column_loading): Make header non-focusable
* fix(column_settings): Use role to group the toggles
* Fix padding in hero container, landing page
Erase hero container padding to fit registration form to full width. By this setting, heading padding disappears, so I adjust heading padding.
* Specify attribute strictly for heading padding
To overwrite padding-bottom in superior settings.
* Make padding shorthand more concise
* fix(compose): Use nav and remove redundant aria-label
* fix(tabs_tab): Use nav and add aria-label
* fix(app): Add aria-label for settings toggle button
* chore: Run yarn manage:translations
* Adjust mobile landing page
Change mobile viewport threshold to 840px in consideration of padding. Fix loss of "container hero" padding in about/more under 675px.
* Fix indent
