Translated using Weblate (#3655)

Co-authored-by: Jonas Tisell <jonas.tisell@live.no>
Co-authored-by: dkstiler <dkstiler@gmail.com>
Co-authored-by: gallegonovato <fran-carro@hotmail.es>
Co-authored-by: ssantos <ssantos@web.de>
Co-authored-by: yangyangdaji <1504305527@qq.com>

translations/reporting.el.xlf

@@ -46,6 +46,10 @@
         <source>report_user_year</source>
         <target>Ετήσια προβολή ενός χρήστη</target>
       </trans-unit>
+      <trans-unit id="8RaUHlW" resname="report_customer_monthly_projects">
+        <source>report_customer_monthly_projects</source>
+        <target state="translated">Έργα ανά μήνα, δραστηριότητα και χρήστη</target>
+      </trans-unit>
     </body>
   </file>
 </xliff>