Upstream Changes:
* Closing https://redmine.iopen.net/issues/4055
* Closing https://redmine.iopen.net/issues/4054
* Turning off zip-safe on a number of eggs
* PEP-8 Cleanup on a number of eggs
* Adding Copyright and License files to a number of eggs
* Putting a slash before the fragment ID (the post ID) in the URL to the last post.
* Closing https://redmine.iopen.net/issues/4057
* Closing https://redmine.iopen.net/issues/4056
* Fixing a Products.GSParticipationStats interface
* Updating Invite by CSV - Adding JSON API Invite support; updating styling; updating profile and verification code; updating UI
Disabling edem.group.member.add.csv and edem.group.member.invite.csv
*Just* *add*

Removing the old Just Add product
Adding the new Just Add product
Adding the Add by CSV

*Resend* *invitation*

Moving Resend Invitation to its own product:
Following the change to Resend Invitation, and calling administrators "administrators", rather than managers

*Invitations*

Sanitising the email address, closing Feature 4023 <https://redmine.iopen.net/issues/4023>
Fixing some whitespace issues with the template, and updating the introductory paragraph
A fix for Sign up, Add member, Add members in bulk, Invite members in bulk, and Subscribe

*Speeding* *up* *the* *redirector*

Using just the RDB to figure out a redirect
Updating the file-query to return the file-name and MIME-type

*Closing* *issues*

Handling SVG images, closing Bug 3662 <https://redmine.iopen.net/issues/3662> and Bug 3663 <https://redmine.iopen.net/issues/3663>
Adding a privacy message and associated popup to the email-posting information on the Group page, closing Feature 3914 <https://redmine.iopen.net/issues/3914>
Only dropping attachments on the floor if they lack a file name
An update to the CSS to fix a 404:

*General* *cleanup*

Switching from assert-statements to raising some errors.
Updating some metadata
Explicitly deferring the loading of the loader
Merge branch 'master' into 2014-skin

Conflicts:
	buildout.cfg
	versions.cfg