History: CssEditDev

I just commit the editCSS feature.
To activate it, set the perm in features admin panel,
and also set the group perms in tiki section for who you want.
bug reports are welcome.

Further css analysis tools will be easy to produce, and will probably
come soon. btw, the system for creating new css is rather special, and
it's not an innocent choice.

You can only modify css files that end with your name, but can edit
all others. that mean a css can end with name like boreal-mose-john-phil
it can be very funny or very annoying, personnally I want to see that.