* fix(media_modal): Keyboard navigation

* fix(column_back_button): Use native button

* fix(media_gallery): Keyboard navigation

* fix(status_content): Make CW content focusable

* Remove outline from focused toot

* change style

Empty a element is created when there is no business e-mail input.

* Set contact address as mailto link

To be able to copy long email address

* Set style for mailto link

* Use a fainted text color for <hr> elements in the landing page

* remove trailing whitespace

* fix(tabs_bar): Check if transition is necessary

* feat(tabs_bar): Only apply optimization for touch devices

* fix(status_action_bar): Use aria-pressed for reblog and favourite button

* fix(column_back_button): Keyboard accessible

* fix(status_content): Make focusable and accessible

* fix(dropdown_menu): Use aria-expanded instead of aria-pressed

* fix(emoji_picker_dropdown): Use aria-expanded instead of aria-hidden

* feat(icon_button): Add aria-expanded

* fix(privacy_dropdown): Use aria-expanded instead of aria-hidden

* Count all URLs in text as 23 characters flat, do not count domain part of usernames

* Add new status text counting logic to web UI

* fix(modal_root): Read type from props, not from component

* fix(status_list): Do not user event.path

* fix(tabs_bar): Allow animation to end before navigating

* fix(tabs_bar): Do not use event.path

* Correction of misspellings

* Improve the OC version

* Improve of the OC version

* Improvement of OC version

* Fix protruded infomation board section

Set "flexwrap: wrap" for sections. Set upper and lower padding for each section, and adjust clearances around sections accordingly. Settings for viewport threshold 500px is no more needed.

* Fix mistake of reducing information-board padding

In according with this fix, additional padding setting  for maximum 840px width is no more needed.

* fix(status): Add tabIndex=0

* fix(status_list): Make keyboard navigable

Signed-off-by: Marcin Mikołajczak <me@m4sk.in>

* fix(web_push_notification): Do not hard reload tab

* fix(web_push_notification_worker): Guard against null subscription

* refactor: Incorporate pull request feedback

* 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

* feat: Web Share for detailed status and account

* fix(account/action_bar): Move share under mention

* fix(compose): Add aria-label for the navigation links

* fix(search): Add input label

* fix(navigation_bar): Link description

* fix(autosuggest_textarea): Add input label

* fix(compose_form): Add input label

* fix(upload_button): Add input label

* fix(account/header): Add link content

* fix(column_header): Use h1 tag

* fix(column_header): Labels move buttons moving column

* fix(settings_text): Add label to input

* fix(column_header): Remove role from h1

* fix(modal_root): Use role=dialog

* fix(modal_root): Focus restauration

* fix(modal_root): Apply inert to sibligs

* fix(column_header): Add role=button

* chore(eslint): Disable jsx-a11y/label-has-for

* 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.

* Update Japanese translations for remote profile, settings toggle button and web share button.

* Update Japanese translation for remote profile.

* 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

Divide media-items to equal width, and hide overlaps.

* Allow longer link text on landing page (reduce padding for Mobile)

* remove empty line