Add quantities to item scripts

Thus ensuring item scripts identify /almost/ entirely correctly. There's
still a risk of player's renaming items and altering it in other weird
ways...
Merge branch 'master' of https://github.com/aufdemrand/Denizen
Escape some item properties

To avoid cheating.
Catch scoreboard saving errors

So they don't entire ruin the save sequence if they occur
Fix smart event regex

- cuboid enter/exit: don't require cu@
- equips armor: more specific
- also add a template event
Merge pull request #585 from mcmonkey4eva/master

Add quantity property to item script items; Fix bugs/usages.