Item393: Add default safe encoding for QUERYPARAMS and add "safe" type to ENCODE
Enable safe encoding for QUERYPARAMS
And since we now have safe for URLPARAM and for QUERYPARAMS we also add the mode to ENCODE.
QUERYPARAMS gets also the "off" mode since we make "safe" the default.
For Encode we have actually also "off" but it makes no sense to document it since it already has a default "url" and if you want to turn the encoding off then you simple just don't use ENCODE at all.