fixed the auto focus of the list on the selected doc
use textarea again.
correctly set titles for list items
simplified selectors. use native placeholder. remove unnecessary elements.
adjust welcome doc to textarea
change url on id change not title change to change url for document with same title
adjsut style for textarea. make date not selectable.
dont auto focus on mobile. only when creating new doc. fixes #185.
proper margin top for editor on mobile
just some formatting of css file
fit textarea height to content using autoresize plugin