Changed page.invalid_links fact to links unit (fix #96)
Releasing 0.10.15
Add setup information to README (Fix #19)
Updating installation instructions (ref #19)
Added unit to some facts defs (fix #97)

Added more specific fact units to fact definitions that needs special
treatment on frontend like numeric and datetime values.
CONTRIBUTING: Fix install data
CONTRIBUTING: Added new sections
Provided specific fact.unit to invalid-links (fix #98)
Make hon
Fixed Integration tests

Thanks @heynemann
Material: Removing unused import
Domains handler: Removing unused import
Domain: Removing extra \
Request handlers: Removing unused import