Gutyán Gábor / circlestack

closes #410

fixes #349

fixes #349

- fix the skip button
- add name/description step
- add renew step

- disable buttons
- remove tag remove links
- remove remove interface button if user is not owner

sed -i -e 's/{{ *STATIC_URL *}}\([^"]*\)"/{% static "\1" %}"/g' $(find -name \*.html)
for i in $(comm <(git grep -l %.static|sort) <(git grep -l staticfiles) -23); do sed -i $i -e '1a {% load staticfiles %}'; done

Also add empty text and prefix to tables in profile

also fix add a hash function to check whether we should
update the activity feed

Closes #230