fix "allow discovery" setting misbehaving

See merge request !1518

fix some chat errors/warnings that sometimes happen

See merge request !1515

Fix incorrect close of a status popover when clicking Expand inside it

Closes #1157

See merge request !1514

basically Vue (3 in particular?) will make changes to DOM before this event
listener is called, and if the target is displayed using v-if, it will not
be part of the DOM at that time, and contains() will return false. so it
goes to call hidePopover() which caused this bug.

fix hashtags by explicitly putting attributes

See merge request !1513

Fix image cropper not closing correctly

See merge request !1512

Fix tab switcher not working when some tabs hidden

Closes #1158

See merge request !1511

Fix mobile nav link text colour

See merge request !1510

Fix shrug text in muted status

Closes #1160

See merge request !1509

Use panel text instead of text for shoutbox icon

See merge request !1508

Fix popover in panel header styling

See merge request !1507

Fix phoenix sockets in dev mode

See merge request !1506

Fix no reactivity on vuex 4 values

Closes #1156

See merge request !1505

phoenix requires the Origin header to be set to the actual address,
so "http://localhost:xxxx" will not work.

Makes develop usable on stock PleromaBE

See merge request !1504

Fix phoenix at 1.6.2

See merge request !1502

According to https://github.com/phoenixframework/phoenix/issues/4623 ,
1.6.2 seems to not have the disconnection bug.

Migration to Vue 3 (again)

See merge request !1385

Remove Vue3 compat build

See merge request !1500

Fix English translation of Shoutbox in features panel

See merge request !1489