Fixed Issue #351
Remove 'frontend_editing' cookie on Stop editing

FIX #351
As mentioned in
https://github.com/feincms/feincms/pull/350#issuecomment-8645705
PEP8 cleanup
Update frontendediting_request_processor docs
Add tests for frontend editing.

Also fix invalid invalid client test for frontend editing that
worked only because fe_box is never in 404 page.
fix typos: i.e. stands for d.h. e.g. for z.B.
Fix #366: Wrong number of parameters for get_inline_instances in Django 1.5
Avoid error for unbound local variable in tag
Merge pull request #367 from jonasundderwolf/fix_appcontent_tag

Avoid error for unbound local variable in tag
Reset personal data
Added patch to frontend bug cookies check
fix AttributeError when using cleanse with section content
Fix #376: Intermittent crashes in RSSContent.cache_content

Sometimes, the feeds seem to have no `link` element. Stop the
update_rsscontent management command from crashing hard when this
happens.

Thanks to Piet Delport for the report!
Blog entries do not have a redirect_to attribute
Adding a 'force' parameter to ensure_completely_loaded, and a forced call when a content_type is added. See #323
Merge branch 'master' of git://github.com/cellarosi/feincms

* 'master' of git://github.com/cellarosi/feincms:
  Added patch to frontend bug cookies check
  Reset personal data
  Fixed Issue #351
Merge branch 'master' of git://github.com/ixc/feincms

* 'master' of git://github.com/ixc/feincms:
  Adding a 'force' parameter to ensure_completely_loaded, and a forced call when a content_type is added. See #323
Fix #373: Video embedding on SSL-secured websites
Last patch re #323 was a sledgehammer to crack a walnut. This is a better solution.
Merge pull request #378 from ixc/master

Only doing minimal cache building when registering a content_type.