Minor license update

Added EGI-InSPIRE & CESNET, updated years
Added alias spec -> test for rake
Exposed set_defaults on Entity.check in Collection

It is now possible to validate a collection and set all
default attribute values at the same time. This includes
attribute values for entities (resources and links) and
action instances. Basic specs are included.
Including more information in Collection rndrngs

Including full categories when rendering to text/occi.
This change does NOT break compatibility! Now the text/occi
content pretty much matches the text/plain content
(information-wise).
Including titles when rndrng entities & mixins

This change does NOT break compatibility!
Smarter logging from the OCCI text parser (quotes)
Fixed header handling in Occi::Parser

Sometimes header values get to the parser as single-value arrays.
These have to be normalized by picking the first element and dropping
the rest (ideally nothing gets dropped, but ...).
Updated specs (parser & rendering changes)

Changes in specs to accommodate recent rendering and parsing
changes in Occi::Core and Occi::Parser.
Minor version bump to 4.2.13