initial feature: new creation / add data procedure
add a new extensible create model action (and TODOs)
fix add action, provice some user convenience
first stub for basic import extension
include descriptions
remove old doap
add three convinient appendMessage functions

- appendSuccess|Warning|ErrorMessage will translate the message text and
  postpone it as a OntoWiki Message to appendMessage
add templates and some checks
fix redirect
add appendInfoMessage method, fix cs issues
add and use isModelSelected and isSelectedModelEditable
move import handling from ModelController to BasicimporterController
catch erros, fix workflow and cs issues