Meta patch

Various metas were messed up
[EXPERIMENTAL] Update tagmanager to our own event manager

what could possibly go wrong
Fix tags working at all

What'd I do wrong
Perfect tag functionality :D

Wooo
Improve instant->delay queues

Set the speed better, + fix meta
unbreak <entry> tags

I blame other people for not telling me I broke this.
Add an initial location.find_path

A basic pathfinder with minimal knowledge of Minecraft or sane movement
patterns.
Update item.json

Somebody changed the details of the JSON tag and added more useless
output
Note ellipsoids in dObject lang

Yay for noting things. Also fix a bit of the meta.
Sort chat triggers alphabetically

Using a quick Java sort.
Untested but there's no reason it wouldn't work. >.>
Fix particle effects

Screw the whole particle effect library, we have proper packet magic.
Gonna suck updating it, but not as bad as managing that library would
be.
Update the meta, fresh particle effect list

By fresh I mean re-copied and I added barrier, not that I actually went
through and updated it properly, although I *should* do that >.>
Improve trigger documentation

We use durations, not decimal numbers. Also show some usages. Yay docs!
Don't complain when YAML tags have fallbacks

Maybe we intentionally specified nonsense so the fallback would show.
Merge pull request #891 from mcmonkey4eva/master

Pull request for various patches