Merge pull request #8 from edoweb/0.6.0-SNAPSHOT

0.6.0 snapshot
Merge pull request #9 from edoweb/0.6.0-SNAPSHOT

add default constructor to Pair - for json binding
Merge pull request #10 from edoweb/0.6.0-SNAPSHOT

0.6.0 snapshot
use sesame to check if a given value is a literal
html output enhanced
- error messages as html
- radio buttons to indicate data source
- logo and favicon
- text in english