Add theme/block_styles attribute
Update config for theme/block_styles
Update admin and block for theme/block_styles
Update simple block to use block_styles attributes
Issue #23: Refactor theme block_styles
Merge branch 'master' of git://github.com/prestaconcept/PrestaCMSCoreBundle into add_block_style_configuration
Issue #23: Inject ThemeManager in BlockAdmin insteadof WebsiteManager
Merge pull request #23 from halundra/add_block_style_configuration

Add block style configuration