- added a case error struct that contains information about certain error cases
in which we would like to output more information to the client
- added a validation method that iterates and adds the information that is
stored in the error cases
* swarm: added script to HTML header to create favicon addresses #153
* swarm: moved data blob direclty into link tag, removed script
* swarm: added favicon info to other html templates
* swarm: fixing test errors
* swarm: fixing favicon test
* swarm: fixing travis tests
* swarm: added script to HTML header to create favicon addresses #153
* swarm: moved data blob direclty into link tag, removed script
* swarm: added favicon info to other html templates
* swarm: fixing test errors
* swarm: fixing favicon test
* swarm: fixing travis tests