Rename label jar portlet assignment class.
Add labeling portlet.
List activated labels in labeling portlet.
Add permission: ftw.labels: Change Labels
ILabelJar adapter: list() should return copies of the label dict.
Implement labeling management view.
Implement form for activating labels.
development.cfg: use ILabelSupport on ATBlob instead of ATFile.
Fix redirection problem in management views.

In the test, the referer is "localhost" if there should not be a referer
because the request was made directly.
Merge pull request #20 from 4teamwork/labeling-portlet

Add portlet for labeling