UI TabContainer added.
UI Ribbon (Tab, Group, Item) added.
Merge branch 'develop' of https://github.com/vivoportal/v2 into develop
Zmeny v Ribbon a TabContainer.
backend WIP
WIP backend
Implementation
Move into fieldset
Field type definition in metadata .ini file
Basic editor implementation
Add do-get method pattern
Fix remove constructor
Merge branch 'develop' into feature/backend

Conflicts:
	module/Vivo/src/Vivo/CMS/ComponentFactory.php
Merge branch 'feature/entity-editor' into feature/backend
Implementation form editor
Merge branch 'develop' into feature/backend

Conflicts:
	module/Vivo/Module.php
	module/Vivo/config/metadata/Vivo/CMS/Model/Content/File.ini
	module/Vivo/config/metadata/Vivo/CMS/Model/Entity.ini
	module/Vivo/config/module.config.php
	module/Vivo/src/Vivo/CMS/Api/CMS.php
	module/Vivo/src/Vivo/CMS/ComponentFactory.php
	module/Vivo/src/Vivo/UI/Component.php
Get metadata method expects string variable
Merge branch 'develop' into feature/backend
Merge branch 'feature/backend' of github.com:vivoportal/v2 into feature/backend
WIP - Explorer
Explorer - selecting entities and sites.