event log UI improvements

Oqtane.Server/Repository/LogRepository.cs

@@ -14,15 +14,29 @@ namespace Oqtane.Repository
             db = context;
         }
 
+        public IEnumerable<Log> GetLogs(int SiteId, string Level, int Rows)
+        {
+            if (Level == null)
+            {
+                return db.Log.Where(item => item.SiteId == SiteId).
+                    OrderByDescending(item => item.LogDate).Take(Rows);
+            }
+            else
+            {
+                return db.Log.Where(item => item.SiteId == SiteId && item.Level == Level)
+                    .OrderByDescending(item => item.LogDate).Take(Rows);
+            }
+        }
+
+        public Log GetLog(int LogId)
+        {
+            return db.Log.Find(LogId);
+        }
+
         public void AddLog(Log Log)
         {
             db.Log.Add(Log);
             db.SaveChanges();
         }
-
-        public IEnumerable<Log> GetLogs(int SiteId)
-        {
-            return db.Log.Where(item => item.SiteId == SiteId).OrderByDescending(item=> item.LogDate).Take(50);
-        }
     }
 }