Merge pull request #27 from afk11/update_libraries

Updating Raw_transaction library, BitcoinLib, and added response message...
Merge pull request #28 from afk11/form_validation

Form validation
Merge github.com:afk11/BitWasp into merge_item_model_changes

Merging this back to master, in a roundabout way..
Merge pull request #29 from afk11/merge_item_model_changes

Merge item model changes
Github can be a pain sometimes..