Got rid of all the 'static' web stuff, since it's no longer necessary or advisable
Fixed 'redo' so it can redo multiple steps
Added support for keeping track of nodes'/segments' revision numbers
Cleaned up how parameters for displaying segment information are processed, in particular for GET requests
Made 'segments' optional when grabbing a view
Now showing changes 'since' revision -1 instead of 0 (otherwise, the initial nodes/segments are never actually displayed)
Fixed a bug where deleted nodes didn't have their revision numbers updated.. I was afraid I'd have a bug like this, but fortunately I had tests that caught it
Revision numbers now go up much more slowly - only once per operation, rather than once per sub-operation