added nodejs + gruntjs config files

+ ignored node_modules/
moved source css + minified output
added unmodified fshl et pure css
css files : concat + minify + commented out unecessary parts

grunt: added grunt-contrib-concat to concat pure.css + fshl.css
updated \SebSept\SimpleFileCache\Cache to 1.0 version

api changed. config.
fix bad extension in rendered css (not .js!)

+added minified temp css to gitignore
no time displayed in /csrfp (fix bug: invalid json returned)