Merge pull request #376 from aufdemrand/morph-working

Add what seems to be the rest of the tag meta.
Enable line of sight check in Chat Trigger again. Remove thread check that doesn't do anything.
Change <duration.value> tag that didn't make a lot of sense into a tag that replicates FlagManager's expirationTime() format.

Also disable Chat Trigger's line of sight check again, after realizing
it's still broken because of changes to Bukkit.
Allow chat trigger's event to be synchronous in config.yml
Allow "on player chats" world event to be synchronous in config.yml. Move and rename "on time resolution" for better clarity.
Add util date tags
Fix my failmeta