Add ui for backup

See merge request pleroma/pleroma-fe!1520

add SK (Slovak) translation

See merge request !1517

Use vue-i18n to determine plural forms of time units

Closes #1164

See merge request pleroma/pleroma-fe!1535

Show underlay for mobile

See merge request pleroma/pleroma-fe!1536

Fix top bar input text colour

See merge request pleroma/pleroma-fe!1538

EmojiPicker: Workaround to search immediately on mobile

See merge request !1539

See https://github.com/vuejs/vue/pull/9814

restore notifications page, fix z-index issues

Closes #1166

See merge request pleroma/pleroma-fe!1534

Layout refactoring + Three column mode

See merge request pleroma/pleroma-fe!1503

Fix Open Chat button

See merge request pleroma/pleroma-fe!1532

Fix registration error

See merge request pleroma/pleroma-fe!1527

Revert "Merge branch 'revert-a88abc7e' into 'develop'"

See merge request pleroma/pleroma-fe!1528

This reverts merge request !1526

Revert "Merge branch 'from/develop/tusooa/lang-opts' into 'develop'"

See merge request !1526

This reverts merge request !1494

Add language options

See merge request !1494

Update dependency semver to v5.7.1

See merge request !1491

Update dependency webpack-merge to v0.20.0

See merge request !1496

Update dependency @vuelidate/core to v2.0.0-alpha.41

See merge request !1501

Pass file name of cropped avatar to form data

See merge request !1522

Poll-end notifications

See merge request !1524

Ref: poll-notif

Ref: poll-notif

Ref: poll-notif