Make logo in play section link to play index
Merge branch 'develop'

Conflicts:
	torchbox/templates/torchbox/tags/top_menu.html
Merge branch 'develop'
Merge branch 'develop'
updated redis-cache version
Merge branch 'master' of github.com:torchbox/wagtail-torchbox
Updated Django version required
Removed TagSearchable from WorkPage

This shouldn't ever be used on pages!
Merge branch 'develop'
Merge branch 'develop'
Merge branch 'develop'
Merge branch 'develop'
Merge branch 'develop'
Merge branch 'develop'
Merge branch 'develop'
Merge branch 'develop'
Merge branch 'develop'
Merge branch 'develop'
allowed homepage intro to be edited
Merge branch 'master' of https://github.com/torchbox/wagtail-torchbox