Fixed admin submenus not working correctly when more than one registered
Exclude clicked item itself if already active
Merge pull request #869 from timorieber/fix-admin-submenu

Fixed admin submenus not working correctly when more than one registered
Added MySQL support to 0004_auto__chg_field_rendition_focal_point_key
Merge branch 'mysql_migration' of https://github.com/coredumperror/wagtail into coredumperror-mysql_migration
Merge branch 'coredumperror-mysql_migration'
add_subpage view now sorts content types by their verbose names.
release note for #872

Conflicts:
	CONTRIBUTORS.rst
Conflicts:
	docs/releases/index.rst
release note for #869
uwsgi_params url update on install scripts debian.sh and ubuntu.sh
Merge pull request #877 from jalourenco/master

uwsgi_params url update on install scripts debian.sh and ubuntu.sh