Shuffled settings a bit b/c all the settings are in "Attachments" section
depsite the fact not all of them are attachments-related.

options won't be lost during reloads because developer forgot to update that
list of settings to be persisted

streamlined. adjusted CSS so that all text in header of post is on same
baseline and all icons/images are middle-aligned.

FE part of invites system

See merge request !297

Account highlight

See merge request !285

# Conflicts:
#   src/components/user_card_content/user_card_content.vue

Focus textarea when clicking "reply"

See merge request !298

Fixes selects having unreadable text on some browsers/OSes.

Closes #123

See merge request !296

Made it so that unfocused tab doesn't autostream posts when scrolled to the top

See merge request !299

Fixes broken custom emoji in autocomplete when proxying to remote BE

See merge request !300

Use serverside html rendering in usernames and bios if available.

See merge request !304

Do not show retweet button if post is followers-only or a DM

See merge request !303

This reverts merge request !301

Hide all status actions if not logged in

See merge request !301

switcher select now has styled options that show preview of what theme's bg/fg
colors are

Revert "Merge branch 'cw-clickthrough' into 'develop'"

See merge request !292

This reverts merge request !291

Add click-to-show content warnings on posts

See merge request !291