* always output latest version of config file to webui
* fix permissions after default config export
* tune code
* set permissions for exported effects
* use qt setperm instead of chmod
update effects code style a bit
* add fallback when config is not readable
* ui: when sending config, convert to utf8 to save size and avoid jumbo frames (todo: minify it)
jsonclient: add some constants for websocket frames (taken from https://github.com/zaphoyd/websocketpp/blob/master/websocketpp/frame.hpp)
* webui:
refactory of websocket connector
sended json data is always convert to utf8
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