Moved review documents in a sub folder
EZP-23096: Added a specification with examples of the config system
Merge pull request #95 from ezsystems/ezp-23096_configuration

EZP-23096: As a developer, I want to have a clear spec/examples of the PlatformUIBundle semantic configuration and how external bundles can modify it
Updated README.md: run bower install from platform

'bower install' should be ran from 'vendor/ezsystems/platform-ui-bundle'
EZP-23012: Added a plugin registry to register and get back plugins
EZP-23012: added the view service base plugin system
EZP-23012: Added the object relation load plugin