Revert LogMonitor/CoreViewModel changes, implement Slider int setting

Also revert the PluginType enum.


Fix more whitespace

ObservatoryCore/LogMonitor.cs

@@ -146,9 +146,7 @@ namespace Observatory
 
             // We found an FSD jump, buffered the lines for that system (possibly including startup logs
             // over a file boundary). Pump these through the plugins.
-            readall = true;
             ReportErrors(ProcessLines(lastSystemLines, "Pre-read"));
-            readall = false;
         }
 
         #endregion