fix double intro message. fixes #44

connectedCallback may run multiple times, because the component is
readded to the dom when the section edit initializes.

keep page context enabled until reload

This disables it when you change the page

fix overflow of <pre> tags in answers

new UI with option to chat about the current page

Translate error message

do not use synthetic submit event on enter

This didn't work correctly for some reason in Firefox. Instead we
directly call the submit handler

focus the user question instead of scrolling to the end

print score in chat

This makes it easier to tweak the similarity threshold

animate button on first show

add send button

Some people said they're not clear how to send messages, so a button was
added. Pressing Enter still works. The entry was changed to a textarea
making longer questions easier. Shift-

add send button

Some people said they're not clear how to send messages, so a button was
added. Pressing Enter still works. The entry was changed to a textarea
making longer questions easier. Shift-Enter can be used to add line
breaks. All button titles are now translatable.

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reuse link colors when styling chat and buttons

brainier button icon

fix visibility changes in chat dialog

added button to reset the conversation

This is needed to start conversing on a new topic

parse answers as markdown

added float option

fix focus and z-index behavior

do not use title on chatbutton element

It's influencing the dialog. A separate attribute that then sets the
title on the start button only makes more sense.

fix access of sources

added fullscreen mode

german translation and more styling adjustments

Frontend integration with simple syntax component