Update everything to throw proper Error() objects instead of string primitives

For reasoning for this change refer to: http://www.devthought.com/2011/12/22/a-string-is-not-an-error/

Update voxel-chest, voxel-clientmc, voxel-commands, voxel-console, voxel-gamemode, voxel-harvest, voxel-inventory-dialog, voxel-inventory-hotbar, voxel-land, voxel-mine, voxel-pickaxe, voxel-plugins, voxel-registry, voxel-use, voxel-voila, voxel-walk, voxel-workbench, voxel-zen

deathcap/voxel-chest@778a3b8855e1225c8e1c7a8c06082d37e414a9c6 Throw new Error, not string
deathcap/voxel-clientmc@e75b555d842c172edc4cde71470c6ec14b6bbd2d Throw new Error, not string
deathcap/voxel-clientmc@e06d1369322c6c76a513b69600cc273699f82ac2 Update to CoffeeScript 1.7.0
deathcap/voxel-commands@caf9ae391bc6350afc814a8eda2fc6d23f3f6c3a Throw new Error, not string
deathcap/voxel-console@c05de3657e788b647829909002f010855a738ff0 Throw new Error, not string
deathcap/voxel-gamemode@dbefedd883ad958d8d899bea5cbc745f8510891c Throw new Error, not string
deathcap/voxel-gamemode@f16f7b02dd23bc018e8e432092229174e2f13f8a Update to CoffeeScript 1.7.0
deathcap/voxel-harvest@beb7474ada83a27a7ba3bb73b7e8265205a57f02 Throw new Error, not string
deathcap/voxel-harvest@754a633e9e377c9167b61e8fa5a8011fb582b261 Update to CoffeeScript 1.7.0
deathcap/voxel-inventory-dialog@942e48a0b0c92727b331dcdd25a84363fedd51cf Throw new Error, not string
deathcap/voxel-inventory-hotbar@08d97e65d7b538a344b6857b8233aad2c3274102 Throw new Error, not string
deathcap/voxel-land@8ed853846d4a30520ba58d5fa33f3aac735e1680 Throw new Error, not string
deathcap/voxel-mine@e473da31a4b888fb8cf261f871931f651a91c42c Throw new Error, not string
deathcap/voxel-mine@dc9e6593f13b37e493c130240a7574982efcba06 Update to CoffeeScript 1.7.0
deathcap/voxel-pickaxe@e5a8adfc05c0540f78deff897d42387f41136cf0 Throw new Error, not string
deathcap/voxel-plugins@a07ff7f4216db1f299708878350bdd9404e3711e Throw new Error, not string
deathcap/voxel-registry@0072dcecfec0843bab4bc4c9fb3cc039c93a5941 Throw new Error, not string
deathcap/voxel-use@0c2171d8feb54fc99fa49712fda15443cec929e6 Throw new Error, not string
deathcap/voxel-use@37167c1a7ffdef5c7471bef2d197a6f01f21d4b9 Update to CoffeeScript 1.7.0
deathcap/voxel-voila@67f4794e186098b023ae72838a2379ae6df0befe Throw new Error, not string
deathcap/voxel-walk@4d6b8703ae4b739348e9199b70b2acac21661230 Throw new Error, not string
deathcap/voxel-workbench@51d7e79c7fac9d70a52f5a4079ef7637a65225e1 Throw new Error, not string
deathcap/voxel-zen@063d27e83df28f9f3925b3e56b9e283dde27f457 Throw new Error, not string

Commit message generated by https://github.com/deathcap/lmno-cl
Update voxel-fuel - client-only waiting UI / host server button, ref GH-40

deathcap/voxel-fuel@c61a383bee4ab8a12c05509a3d17b66b5ead8afe Remove client waiting UI when client-only instance connects to remote server, too
deathcap/voxel-fuel@2ed752640f86a1f7a47762f345761026a7083e7e Remove button on click - starting a the server instance works
deathcap/voxel-fuel@89771201e7e0c82490843f32dc72f3af43d4da32 Fix missing selves
deathcap/voxel-fuel@64d9c9f014b730dc258a6aff03ffd946090fd3c3 Remove ever dependency; use DOM events directly
deathcap/voxel-fuel@418c63c0fa01c65bf957ec27b3bb159bad6c6cc1 Refactor; add 'host server' button in client-only mode
deathcap/voxel-fuel@5bade0cc450a869482e02517e5c7a57e42a35e29 Add ever dependency
deathcap/voxel-fuel@5ae071443bc33c6f9db556d2620f7c6be5c94238 setupClientWaitingUI <div>

Commit message generated by https://github.com/deathcap/lmno-cl
Add voxel-health/bar - functional, but not nothing hurts/heals you yet

Note: until some kind of danger is added, the health bar can be tested
from the console, e.g. with:

    game.plugins.get('voxel-health').hurt(2)
    game.plugins.get('voxel-health').heal(1)