fix SectionController and add section in Database:

INSERT INTO `mvc`.`section` (`SectionID`, `hidden`, `SectionInMenu`, `SectionAlias`, `OwnerID`, `UserID`, `TimeCreated`, `TimeSaved`, `SectionType`, `SectionLanguages`, `SectionParentID`, `SectionGroupID`, `SectionLayout`, `SectionBox`, `SectionBoxStyle`, `AccessGroups`, `SectionArguments`, `SectionLink`, `SectionTarget`, `SectionName`, `SectionTitle`, `SectionDescription`, `SectionKeywords`, `SectionPosition`, `SectionIntroContent`, `SectionContent`, `SectionClicks`, `SectionViewOptions`, `SectionController`, `SectionAction`, `SectionView`, `SectionUrl`, `SectionRout`) VALUES (NULL, '0', '0', 'section', 'root', 'root', '0000-00-00 00:00:00', '0000-00-00 00:00:00', 'admin', '', '0', '', '', '', '', NULL, NULL, NULL, NULL, 'Section', NULL, NULL, NULL, NULL, '', '', '0', '', 'section', 'index', '', 'section', '');