color config on socket connection.

to config route

config endpoint, frontend colorpicker, load color on socket (serverside)
connect

them on page change.

users on the current selected page. See also #32, a refactor of the old
pointer-tool branch.

Some Todos:
Different style for touch and pen. Highlight on click. Only active
with normal select tool. Configuration options

manager connect functions.

build.

python link snippet.

Fixed a bug where after a user visited a shared link, the user was not able to edit this book and view other books (redirected to not found).
Also fixed a minor bug in sso flow behind reverse proxies.

 of native ui overlap. Also fixed reconnection issue on stale/cached
 content see #89.

closes #100