update /book description
Merge pull request #271 from necrodoom/patch-25

update /book description
Reduce chance of self repeating powertool actions.
/eco overhaul, adds /eco set
Merge pull request #272 from GunfighterJ/2.9

/eco overhaul, adds /eco set
Negate 'groupmanager.noofflineperms' by default in the owner group.
Move firework meta handling into MetaItemStack
Allow firework meta to be applied to item spawning and kit commands.
Add example firework kit, and cleanup debug messages.
Cleanup /eco, fix reset broadcast
Cleanup /exp command, and fix vanilla syntax issues.
Needs double checking with commandblocks with vanilla syntax.
Merge pull request #274 from GunfighterJ/2.9

Cleanup /eco, fix reset broadcast
Minor cleanup on /eco command.
Fix colour syntax message on coloured leather.
Fix eco take derp.
Fix minor /book bug (Null author)
Trim long /gc output, add /gc all
Fix book meta error message.
Add optional 2nd arg to broadcast format.
Show afk warning when pm'ing afk players.
Fix vanished leak on player matching.
Update Essentials/src/messages_se.properties