upd: save JSON feed in global var
new: design for menu
new: menu
new: template files for converter
upd: online support link
del: unwanted elements
upd: layout
upd: design changes
new: for converter
upd: button context
upd: initialise rates var
new: add, remove, conversion code
new: update rates on change
upd: remove node code
new: save
added comments to explain code
del: unlock function
jslint updates
upd: design and layout
upd: same currency not deleted; unlock code