Base: Move currentDateTimeString out of TimeInfo

currentDateTimeString does not have anything in common
with TimeInfo class, move it into Tools.

src/App/Document.cpp

@@ -798,7 +798,7 @@ Document::Document(const char* documentName)
 #ifdef FC_LOGUPDATECHAIN
     Console().Log("+App::Document: %p\n", this);
 #endif
-    std::string CreationDateString = Base::TimeInfo::currentDateTimeString();
+    std::string CreationDateString = Base::Tools::currentDateTimeString();
     std::string Author = App::GetApplication()
                              .GetParameterGroupByPath("User parameter:BaseApp/Preferences/Document")
                              ->GetASCII("prefAuthor", "");
@@ -1606,7 +1606,7 @@ bool Document::save ()
             TipName.setValue(Tip.getValue()->getNameInDocument());
         }
 
-        std::string LastModifiedDateString = Base::TimeInfo::currentDateTimeString();
+        std::string LastModifiedDateString = Base::Tools::currentDateTimeString();
         LastModifiedDate.setValue(LastModifiedDateString.c_str());
         // set author if needed
         bool saveAuthor = App::GetApplication().GetParameterGroupByPath

src/Base/TimeInfo.cpp

@@ -77,14 +77,6 @@ void TimeInfo::setTime_t(int64_t seconds)
     timebuffer.time = seconds;
 }
 
-std::string TimeInfo::currentDateTimeString()
-{
-    return QDateTime::currentDateTime()
-        .toTimeSpec(Qt::OffsetFromUTC)
-        .toString(Qt::ISODate)
-        .toStdString();
-}
-
 std::string TimeInfo::diffTime(const TimeInfo& timeStart, const TimeInfo& timeEnd)
 {
     std::stringstream str;

src/Base/TimeInfo.h

@@ -81,7 +81,6 @@ public:
     bool operator>=(const TimeInfo& time) const;
     bool operator>(const TimeInfo& time) const;
 
-    static std::string currentDateTimeString();
     static std::string diffTime(const TimeInfo& timeStart, const TimeInfo& timeEnd = TimeInfo());
     static float diffTimeF(const TimeInfo& timeStart, const TimeInfo& timeEnd = TimeInfo());
     bool isNull() const;

src/Base/Tools.cpp

@@ -26,6 +26,7 @@
 #include <sstream>
 #include <locale>
 #include <iostream>
+#include <QDateTime>
 #include <QElapsedTimer>
 #endif
 
@@ -365,6 +366,14 @@ std::string Base::Tools::joinList(const std::vector<std::string>& vec, const std
     return str.str();
 }
 
+std::string Base::Tools::currentDateTimeString()
+{
+    return QDateTime::currentDateTime()
+        .toTimeSpec(Qt::OffsetFromUTC)
+        .toString(Qt::ISODate)
+        .toStdString();
+}
+
 // ----------------------------------------------------------------------------
 
 using namespace Base;

src/Base/Tools.h

@@ -346,6 +346,8 @@ struct BaseExport Tools
      * @return
      */
     static std::string joinList(const std::vector<std::string>& vec, const std::string& sep = ", ");
+
+    static std::string currentDateTimeString();
 };
 
 

src/Mod/Cloud/App/AppCloud.cpp

@@ -1359,7 +1359,7 @@ bool Cloud::Module::cloudSave(const char* BucketName)
         doc->TipName.setValue(doc->Tip.getValue()->getNameInDocument());
     }
 
-    std::string LastModifiedDateString = Base::TimeInfo::currentDateTimeString();
+    std::string LastModifiedDateString = Base::Tools::currentDateTimeString();
     doc->LastModifiedDate.setValue(LastModifiedDateString.c_str());
     // set author if needed
     bool saveAuthor = App::GetApplication()