added type constants to category schema, extended validator tests
extended the metainfo schema: new badge types
meta info repo requires a validator
validator provides isValidCategoryGroup() method
added footer to layout
added links with icons, linking back to packagist
move the "latest" method to metainfo repo, returns collection of metainfos now
webcontroller apapted to moved method
improved index view
added a twig extension but crashes the security service provider
updated dependencies
included font-awesome
layout tweaks, code cleanup
package::getMetaInfos can be filtered
showing metainfo on package if available