Merge pull request #5 from dwenzel/dev

Dev
namespaces for model classes, demand models moved to Dto
namespaces for repository classes
namespace for TaskCommandController
namespaces for controller
namespaces for hooks
namespaces for services
CommentViewHelper removed
namespaces for ViewHelpers
dependencies adapted
use namespaced classes from core
use namespaced classes from core
t3lib_div replaced
t3lib_* Classes replaced
namespaces for tests
typo corrected
respect namespace for DateTime and string
namespaces for templates
namespaces and vendor
namespaces in Configuration