remove useless config keys
repl improvements
change config file structure

it is now better structured, and allow
configuring project separately from the modules
allow comments in json files and improve config
improve gulpfile

* watch for config changes and restart server
* new task: develop.  It serves, and watches.  It is awesome
change default port back to 8080

for the stupid reason that my chrome browser select that value
by default in autocompletion
move chat related css to chat.css
implement the chat directive

create a chat directive, and improve the way it is displayed
notifies when user logs in and logs out
improve http_logger formatting