do not check 'remember' log in by default
Fix setting the max-upload-size for really large values.

php can only parse filesize units up to gigabytes, not terabytes or petabytes.
Send URI instead of filepath to NGINX for X-Accel
Fixes login / logout when HTTP Basic Headers are avilable.
Don't to set the cookie it wasn't needed.
cookie would be useless if value is not set
Don't always $cookie_path, only set it when needed
Fixed Typo
Remove missed stuff from merge
Add unit tests for OC_Helper::phpFileSize function
be nice and use a relative import so people can use the class without firing up owncloud
Better handle return values from Filesystem::getMountBy*

getMountByStorageId and getMountByNumericId return an empty array on error,
which should be detected to avoid possible errors. This commit also adds in
some new logging points and throws to aid debugging
fixes #8376
rewind iterator before iteration starts
Group Database backend must not gather user details itself but ask user
backends. This is a port to master from PR #7745

remove OC_GROUP_BACKEND_GET_DISPLAYNAME option for group backends

Conflicts:
	lib/private/group/backend.php

LDAP: getDisplayNamesInGroup is not an option for group backends anymore

Conflicts:
	apps/user_ldap/group_ldap.php
	apps/user_ldap/group_proxy.php

clean up group backends

Conflicts:
	lib/private/group/database.php

remove now unnecessary test

implement getDisplayNames in group manager

adjust user manager tests

test for group manager's displayNamesInGroup

trim must not be used in empty in PHP < 5.5

keep the constant to not provoke PHP warnings

Conflicts:
	lib/private/group/backend.php
fix shouldEncrypt() method and improved decryptAll() unit tests
the group manager calls exists check less often, adjust test accordingly
refs #8376; added comment and applied patch on other files
refs #8376; spaces=>tabs
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