Now shows guttermarks

Takes new params for markOn, markOff and initMarks
Creates new span DOM elems for markOn and markOff
Determin if a line is foldable by there being a range with chars in
between (ie, start & end line's & ch's not the same)
If it's foldable and we're clearing or setting up the initMarks, show
markOff marker, otherwise markOn marker (as cloned nodes)
Also set to the markOff marker when clicking the inline widget
On load also set the gutter marks

Using tagRangeFinder for now, need to also handle braceRangeFinder and
put into a function within ICEcoder
foldcode.js loaded and guttermarks set

A modified version of foldcode.js is now loaded to show guttermarks
New classes added for foldmarker, guttermarker plus the on and off BG
colors
Remove temp measure of showing a guttermarker then 1 second later
removing
Instead now pass new params to the new codefold system to show
guttermarks