ref #3929, #3935, #3949, #3981

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

* Use instance name in "password changed" mail

instead of "Mastodon".

Fixes tootsuite#2620.

* Use instance name in password reset mail

instead of "Mastodon".

* feat(components/media_gallery): Responsive images

* fix(components/media_gallery): Link to image URL

* Update @storybook/addon-actions to v3.1.6

* Update @storybook/react to v3.1.6

* Update babel-loader to v7.1.0

* Update babel-plugin-transform-react-remove-prop-types to v0.4.6

* Update enzyme to v2.9.1

* Update fsevents to v1.1.2

* Update intersection-observer to v0.3.2

* Update npmlog to v4.1.2

* Update pg to v6.4.0

* Update postcss-loader to v2.0.6

* Update rails-ujs to v5.1.2

* Update react to v15.6.1

* Update react-addons-shallow-compare to v15.6.0

* Update react-dom to v15.6.0

* Update react-notification to v6.7.1

* Update react-test-renderer to v15.6.1

* Update react-textarea-autosize to v5.0.7

* Update redux to v3.7.1

* Update resolve-url-loader to v2.1.0

* Update sass-loader to v6.0.6

* Update sinon to v2.3.5

* Update stringz to v0.2.2

* Update uuid to v3.1.0

* Update websocket.js to v0.1.12

* Update yargs to v8.0.2

* yarn upgrade

* i18n: Updated Polish translation

* Update pl.yml

When Windows checks out files, it defaults to changing line endings to CRLF. If these files are then copied to a Linux system to be run, and the endings aren't changed at some point in that process, things break. This file forces git to use LF for all text files on all systems (except the request testing specfiles) to prevent issues everywhere.

This also resolves the issues where sometimes the timestamps wrap and also sits unpleasantly close to the … button.