feat(release): Add Changelog.md

Signed-off-by: Benoit Mortier <benoit.mortier@opensides.be>

Changelog.md

+## %"FusionDirectory 1.2.1" - 2017-11-02
+
+### Added
+
+#### fusiondirectory
+- fd#5703 Sort entries in users dashboard
+
+#### fusiondirectory-plugins
+- fd-plugins#5548 Sort entries in ppolicy dashboard
+
+### Changed
+
+#### fusiondirectory-plugins
+- fd-plugins#5685 supannRefId on Structure object is too small and mono valued
+- fd-plugins#5713 Phones have wrong attribute order
+
+### Fixed
+
+#### fusiondirectory
+- fd#5348 LDIF import should support folded comments
+- fd#5588 fusiondirectory-setup custom smarty directory forced to lowercase
+- fd#5589 SASL missing from Password default hash field in setup wizard
+- fd#5668 Password length on login page should have no limit
+- fd#5701 Management filter is broken when mainAttr is FALSE
+- fd#5694 Cannot add a group to "users and groups" field in sudo role
+- fd#5696 If tab objectClass contains top, tab gets activated by default
+- fd#5700 Non-existing classes in pluglist::$info
+- fd#5711 ACL list have a PHP error when there are ACL on objects
+- fd#5712 Error text is wrong is some cases
+- fd#5724 Error before login on Centos 7
+- fd#5726 Log to fd behind an lemonldap::ng portal show debug log instead of main page
+
+#### fusiondirectory-plugins
+- fd-plugins#5629 when remove some content on partage tab, an error occurs
+- fd-plugins#5672 Mail plugin incompatible with PHP 7.1
+- fd-plugins#5673 PHP error on login page when applications plugin is installed and applications in menu set to only allowed
+- fd-plugins#5688 backport the dns code from 1.3-dev for speed and usability reason
+- fd-plugins#5707 posixAccount foreignKey is wrong
+- fd-plugins#5708 software list and profile management error when using several OPSI Servers
+- fd-plugins#5709 DNS Tab - record filtering is broken for new systems
+- fd-plugins#5716 DNS Zone edition is too slow
+