Merge branch 'master' of github.com:ezsystems/research
Merge remote-tracking branch 'publicapi/master'

Merged publicapi repo (the implementation of eZ/Publish/API).
Note: This disables unit tests in ezp namespace temporary because of changes in config.php and bootstrap.php.
They will be enabled as soon as the pices of code that are ment to live on is refactored into the new eZ namespace.
Fixed some namespace use and phpdoc
Fixed wrong classnames in phpdoc
Merge branch 'master' of github.com:ezsystems/ezp-next
Fixed errors in method signatures and phpdoc
Fiexed ,ethod signatures, phpdoc and use statements
Namespace for extended RuntimeException fixed.

The leading backslash was missing for the extended RuntimeException
class.
Initial set of PublicAPI tests added.
Typo in class doc comment fixed.
Test for SectionService::newSectionUpdateStruct() added.
Method loadSection() tested with not found variant tested.
Method loadSectionByIdentifier() tested with not found variant tested.
Remove ?> from php files
Fix todo in IO\ContentType
Fixed typo in use of NotFoundException
Add propoer 'use' aliasing in API Exceptions
Add missing InvalidArgumentException
Refactor IO & Unit tests to work against handler interface
Fixed #EZPNEXT-251: Implement __isset magic method for ValueObject

Also added __unset while on it.