Validation WIP
Validators now a mixin and included on a block. Change validate to valid on the ST Editor. Start adding a place to handle messages on the blocks.
Rewrite the function bindAll to work with underscore > 1.5 too. Remove functions that aren't required in the bound array anymore.
Add a addMessage and resetMessages function that takes a string and appends a message to it. Style the messages container at the top of the block. Add tests for the validations. Append an error if the JSON parsing fails.
Fix issues with unbound functions on the floating block control and on the positioner.
Fix missing bound function from onBlockDropped
Minified the source
Merge pull request #29 from madebymany/feature/re-think-validators

Re-think Validators, add messages and minor fixes