Changes in 1.7.0

Summary

Bugfix - Change the groups index to be case sensitive: #2109
Groups are considered to be case sensitive. The index must handle them case sensitive too
otherwise we will have undeterministic behavior while editing or deleting groups.
#2109
Change - Update ownCloud Web to v3.2.0: #2096
Tags: web
We updated ownCloud Web to v3.2.0. Please refer to the changelog (linked) for details on the web
release.
#2096
https://github.com/owncloud/web/releases/tag/v3.2.0
Enhancement - Enable the s3ng storage driver: #1886
We made it possible to use the new s3ng storage driver by adding according commandline flags and
environment variables.
#1886
Enhancement - Color contrasts on IDP/OIDC login pages: #2088
We have updated the color contrasts on the IDP pages in order to improve accessibility.
#2088
Enhancement - Announce user profile picture capability: #2036
Added a new capability (through cs3org/reva#1694) to prevent the
web frontend from fetching (nonexistent) user avatar profile pictures which added latency &
console errors.
#2036
Enhancement - Update reva to v1.7.1-0.20210531093513-b74a2b156af6: #2104
This reva update includes: * fix move in the owncloud storage
driver * add checksum header to the tus
preflight response * Add reliability
calculations support to Mentix * fix
response format when accepting shares *
Datatx createtransfershare
#2102
#2104