[Web] Fix mailbox editing when password is unchanged, fix adding new administrator (fixes #4054, fixes #4053); [Web] Update libs, add LDAP for future admin/domain admin authentication

data/web/inc/lib/vendor/symfony/translation-contracts/README.md

@@ -0,0 +1,9 @@
+Symfony Translation Contracts
+=============================
+
+A set of abstractions extracted out of the Symfony components.
+
+Can be used to build on semantics that the Symfony components proved useful - and
+that already have battle tested implementations.
+
+See https://github.com/symfony/contracts/blob/master/README.md for more information.