devMode setting added, swapped menu item order

New setting for devMode. If true it will use the unminified ice-coder.js
file, otherwise the min.js version
Copy option now available for multple file copying, outside of single
menu items. Paste option moved next to it.
Copying of multiple items

Celecting copy will now store an array of the selected items and when
pasting, add each to the server queue for pasting.