Merge branch '2.7' into 2.8

* 2.7:
  do not depend on a fixed date in layout tests
  [Console] Escape default value when dumping help
  [Console] OS X Can't call cli_set_process_title php without superuser
  Polish translation improvement in Validator component
  [Console] Descriptors should use Helper::strlen
  [Config] Improve PHPdoc / IDE autocomplete
  [Debug] Wrap call to ->log in a try catch block
  [Debug] UndefinedMethodFatalErrorHandler - Handle anonymous classes
  [SecurityBundle] Made collection of user provider unique when injecting them to the RemberMeService

Resources/translations/validators.pl.xlf

@@ -36,11 +36,11 @@
             </trans-unit>
             <trans-unit id="9">
                 <source>This field was not expected.</source>
-                <target>To pole nie spodziewano.</target>
+                <target>Tego pola się nie spodziewano.</target>
             </trans-unit>
             <trans-unit id="10">
                 <source>This field is missing.</source>
-                <target>To pole jest chybianie.</target>
+                <target>Tego pola brakuje.</target>
             </trans-unit>
             <trans-unit id="11">
                 <source>This value is not a valid date.</source>