Add an X icon to clear error message from post status form, hack to allow posting empty statuses if they have attachments

Round the edge of the user profile user card, make sure 'follows you' stays in the right, fix avatar class conflict.

Make pic bigger and remove border and add shadow, make screen name white again, make cog appear only in sidepanel.

Visual indicator for when posting is happening, as well as disabling the button to prevent double-posts.

Adjust the clickable area of notif avatar to not contain everything below it, adjust the status avatar to not have ghost border on top/right

Add error message in post status form when failing to post and don't get rid of post/attachments when failing.

Force user profile timeline update when the user id changes (like when another user has been searched/found).

Add new user-settings component/route, add options to change name, bio, avatar, banner and bg. Add those options to api service and backend interactor service.

This reverts commit 86773579.

Fix long names overflowing and messing everything (now just overflowing parts not drawn), fix non-square avatars not drawn as squares.

Add a config.json option for enabling registration, don't link and redirect away from register page when it's disabled.