added missing indicators on pages_for_moderation and recent_edits
tweaked empty dash appearing for non-default sites
tweaks to unusual formatting
tweaks to unusual formatting
Fixed pinned dependency versions

These can cause real headaches if you have a different version of six or requests on your host machine.

This should fix the ``pkg_resources.DistributionNotFound`` error some people have been getting with the "wagtail start" command.
fixed tests broken by new abstract class 'indicator'
Merge remote-tracking branch 'upstream/master'
Merge branch 'master' into return-to-edit