New attachment types

You can now add new media types that will render, and with that we also have an improved Tweet preview with proper media detection. * Attachment types like images now render a preview in the box. * Tweet links now detect the difference between an avatar or media and edits the preview based on the type. * Show shaded icons for reaction if you have made a reaction before to that comment or conversation. * Fixed login session bug with old sessions. * Updated share boxes to be scaled based on depth and have a border to separate shares in shares. * Register of a user auto makes user login also. * Switching pages or actions in the browser will close the modl box if it's open.