merged branch umpirsky/fix-serbian-translation (PR #1833)

Commits
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56e92e9 Fixed Serbian translation.

Discussion
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Fixed Serbian translation.

There was one new message untranslated, and one changed which required translation changes.

src/Symfony/Bundle/FrameworkBundle/Resources/translations/validators.sr.xliff

@@ -32,7 +32,7 @@
             </trans-unit>
             <trans-unit id="8">
                 <source>One or more of the given values is invalid</source>
-                <target>One or more of the given values is invalid</target>
+                <target>Једна или више вредности је невалидна</target>
             </trans-unit>
             <trans-unit id="9">
                 <source>The fields {{ fields }} were not expected</source>
@@ -112,7 +112,7 @@
             </trans-unit>
             <trans-unit id="28">
                 <source>This form should not contain extra fields</source>
-                <target>Група поља не треба да садржи додатна поља</target>
+                <target>Овај формулар не треба да садржи додатна поља</target>
             </trans-unit>
             <trans-unit id="29">
                 <source>The uploaded file was too large. Please try to upload a smaller file</source>