After revert of r22435 and talk with Brion on IRC previously introduced and newly...

After revert of r22435 and talk with Brion on IRC previously introduced and newly function parameters merged to an array.

Introducing 'frameless' keyword to [[Image:]] syntax which respects the user preferences for image width like 'thumb' but without a frame.
Now we can use frameless images without the need to nailing its size by a constant pixel parameter. Scaling by different user preference/anon view will always keep the proportions.

Usage: [[Image:name.jpg|frameless|right]]