[issue 135] enhanced search

implement enhanced search for chat messages

SharedLibraryCore/Migrations/20200521203304_AddHostnameToEFServer.cs

@@ -0,0 +1,22 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+namespace SharedLibraryCore.Migrations
+{
+    public partial class AddHostnameToEFServer : Migration
+    {
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<string>(
+                name: "HostName",
+                table: "EFServers",
+                nullable: true);
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "HostName",
+                table: "EFServers");
+        }
+    }
+}