Fix #390: No longer depend on return value of add-row handler.
Update the release notes for v1.7
Move the extensions docs into their own file
Merge branch 'master' into next

* master:
  Fix #390: No longer depend on return value of add-row handler.
Add a TODO
FeinCMS v1.6.4
Merge branch 'master' into next

* master:
  FeinCMS v1.6.4

Conflicts:
	feincms/__init__.py
Fix #382: Do not crash if video URL could not be parsed
FeinCMS v1.7.0
Start the v1.8 branch
Fix the get_object invocation in the ExtensionsMixin
The setup argument to for_request has been removed
Convert all tests which still used feincms_navigation to use feincms_nav
Remove the cleanse tests because the cleanse module has been removed
Generate HTML coverage after running the testsuite
Remove all references to function-based generic views
Fix TreeEditor.indented_short_title if get_absolute_url crashes
Merge branch 'maint'

* maint:
  Fix TreeEditor.indented_short_title if get_absolute_url crashes
Merge branch 'master' into next

* master:
  Fix TreeEditor.indented_short_title if get_absolute_url crashes
Remove a few unused and ugly template tag helpers