Core/Logging: Add option to remove timestamp, Log Level and Log Filter Type from logged msgs

- Appender config option .Timestamp and .Backup became obsolete
- New Appender config option .Flags added

Appender Console prefixes Log Level and Log Filter Type to the logged text as default
Appender File prefixes Timestamp, Log Level and Log Filter Type to the logged text as default

src/server/shared/Logging/AppenderFile.cpp

@@ -18,16 +18,16 @@
 #include "AppenderFile.h"
 #include "Common.h"
 
-AppenderFile::AppenderFile(uint8 id, std::string const& name, LogLevel level, const char* _filename, const char* _logDir, const char* _mode, bool _backup)
-    : Appender(id, name, APPENDER_FILE, level)
+AppenderFile::AppenderFile(uint8 id, std::string const& name, LogLevel level, const char* _filename, const char* _logDir, const char* _mode, AppenderFlags _flags)
+    : Appender(id, name, APPENDER_FILE, level, _flags)
     , filename(_filename)
     , logDir(_logDir)
     , mode(_mode)
-    , backup(_backup)
 {
     dynamicName = std::string::npos != filename.find("%u");
+    backup = _flags & APPENDER_FLAGS_MAKE_FILE_BACKUP;
     if (!dynamicName)
-        logfile = OpenFile(_filename, _mode, _backup);
+        logfile = OpenFile(_filename, _mode, backup);
 }
 
 AppenderFile::~AppenderFile()
@@ -50,8 +50,7 @@ void AppenderFile::_write(LogMessage& message)
 
     if (logfile)
     {
-        fprintf(logfile, "%s %-5s [%-15s] %s", message.getTimeStr().c_str(), Appender::getLogLevelString(message.level), Appender::getLogFilterTypeString(message.type), message.text.c_str());
-
+        fprintf(logfile, "%s%s", message.prefix.c_str(), message.text.c_str());
         fflush(logfile);
 
         if (dynamicName)