Fix Strava upload Train simulations as VirtualRide

Partially revert #4337 to fix this regression,
the presence of TRAIN XData is used to identify
an activity as VirtualRide in Strava upload.

src/Core/GcUpgrade.h

@@ -131,7 +131,7 @@
 // the next two will with each build/release
 #define VERSION_LATEST 5005
 #define VERSION_STRING "V3.7"
-//#define GC_VERSION VERSION_STRING // To force version string on non-tagged ci builds
+#define GC_VERSION VERSION_STRING // To force version string on non-tagged ci builds
 
 // default config for this release cycle
 #define VERSION_CONFIG_PREFIX "http://www.goldencheetah.org/defaults/3.7"

src/Train/TrainSidebar.cpp

@@ -2303,11 +2303,8 @@ void TrainSidebar::diskUpdate()
                          << "," << displayLatitude;
     }
 
-    QString slopeStr = (status&RT_MODE_SLOPE)?QString::number(slope):QString("");
-    QString loadStr = (status&RT_MODE_ERGO)?QString::number(load):QString("");
-
     recordFileStream    << "," // headwind
-                        << "," << slopeStr
+                        << "," << slope
                         << "," << displayTemp
                         << "," << displayWorkoutLap
                         << "," << displayLRBalance
@@ -2319,7 +2316,7 @@ void TrainSidebar::diskUpdate()
                         << "," << displayTHB
                         << "," << displayO2HB
                         << "," << displayHHB
-                        << "," << loadStr
+                        << "," << load
                         << "," << displayRppb
                         << "," << displayRppe
                         << "," << displayRpppb