Added link to edit the Document on the Document's public page. This link will only show if the user is allowed to edit the document. Fixes issue 271. Update issue 271 Owner: ljvderijk

[nosetests]
exclude=pymox
with-coverage=1
cover-package=soc
cover-erase=1
cover-html=1
cover-html-dir=coverageResults
#debug=nose.plugins.cover