Dragon Drop interface

Quick and dirty version of the Drag n Drop interface (from SparkView to
IdeaBucket)
added resources
Merge pull request #7 from maxluzuriaga/maxwork

Added creation of tags automatically
Merge pull request #6 from aphillips915/master

Dragon Drop interface implemented
Merge pull request #8 from thereedeemer/master

icon resources added
Fixed bug which didn't allow existing tags to be added to a new idea.
Added validations to models, including email validation.