All filetypes now show icons via single sprite sheet
This works via setting a class with pseudo :before containing icon sized
block with icon in BG
blank.gif is used as a sizing placeholder for LI images
Removed a few trailing semi colons
Hex codes shortened if poss (ie, #888888 becomes #888 and #ff0000
becomes #f00)
Swapped text colour on tabs, selected now has black text, others white
text
Global variables removed from JS file
Plugins system evolved, now including setInterval
Seperate CodeMirror instances per tab
backupOpenFiles plugin created
Minor fixes & improvements