Move to qt 5.7 for vs2013

CI/ci-windows-build.bat

 @echo off
+
 ::########################################
 ::# Fetch test data
 ::########################################
@@ -10,6 +11,10 @@ git clone git@roosevelt.informatik.rwth-aachen.de:moebius/OpenFlipper-Test-Data.
 ::load configuration and settings
 call %~dp0\ci-windows-config.bat
 
+
+echo "CMAKE_CONFIGURATION: %CMAKE_CONFIGURATION%"
+
+
 mkdir rel
 cd rel
 
@@ -35,4 +40,4 @@ cd ..
 robocopy . artifacts /e /NFL /NDL /NJH /NJS /nc /ns /np /xd artifacts /xd .git
 
 ::robocopy uses some error codes different from 0 
-IF %errorlevel% LSS 8 exit /b 0
\ No newline at end of file
+IF %errorlevel% LSS 8 exit /b 0