webrepl_cli.py: Add support for accessing the REPL.

webrepl: Allow the page to run from the device (over HTTP).

webrepl: Split css and js out of webrepl.html.

webrepl: Merge websocket_helper into webrepl_cli.py.

Preserve websocket server IP over reloading the web page.

webrepl_cli.py: Use `uwebsocket` instead of `websocket`.

webrepl_cli.py: Allow to pass password on the command line with -p option.

got rid of the interpolated string

password as CLI argument

webrepl_cli.py: Fix parsing of remote host:port:file string.

webrepl.html: Detach websocket from term when closed.

webrepl.html: Add warning on accessing over HTTPS.

README: Fix typos.

README: Add warning about problems access WebREPL client over HTTPS.

webrepl.html: Deselect previously selected file before reading