Added troubleshooting doc

Author: rxtur

Blogifier.sln

@@ -1,7 +1,7 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio 15
-VisualStudioVersion = 15.0.27428.2011
+# Visual Studio Version 16
+VisualStudioVersion = 16.0.28803.352
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{4E0164ED-2249-4973-B3FD-180172EBCD0A}"
 	ProjectSection(SolutionItems) = preProject
@@ -36,6 +36,7 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "docs", "docs", "{6015AFDB-9
 		docs\SendGrid.md = docs\SendGrid.md
 		docs\SqlServer.md = docs\SqlServer.md
 		docs\Themes.md = docs\Themes.md
+		docs\Troubleshooting.md = docs\Troubleshooting.md
 		docs\VideoAudio.md = docs\VideoAudio.md
 	EndProjectSection
 EndProject

docs/Troubleshooting.md

@@ -0,0 +1,32 @@
+Blogifier is server-side ASP.NET Core application that can be deployed to different environments and even operating systems. 
+Below several common scenarios to run and troubleshoot locally before application deployed to host server.
+
+### Run in Visual Studio
+1. Open solution in Visual Studio, right-click `App` project in solution explorer and set it as startup project
+2. Run in debug mode and make sure application runs in the web browser
+3. In the browser, open developer tools, refresh page and make sure no errors show up in the console
+
+If all looks good, application is ready for deployment
+
+### Deploy and Run from Local Folder
+Use steps outlined in the [build section](https://github.com/blogifierdotnet/Blogifier/blob/master/docs/Build.md)
+to publish application to the local folder and run it using `dotnet App.dll` command.
+Again, open developer tools and verify no client-side errors thrown in the JavaScript console.
+
+### Deploy to Host Server
+The output produced and verified in the local deployment step is exactly what needs to be published to the host.
+Usually your host provides information how to upload and set up application on remote server.
+It can differ, but important things are:
+
+1. Verify application runs locally (steps above)
+2. Move all files from the `build/publish` folder to your remote host
+3. Run application on your remote hosting server
+4. Verify with development tools there no errors (same as in previous steps)
+
+If at any point during this process you run into errors, 
+please post them to [Github issues](https://github.com/blogifierdotnet/Blogifier/issues) along with **steps to re-produce the error**.
+Without steps to re-produce the error, it is hard or even not possible to fix it.
+
+> It is common that application runs fine locally and only has issues when deployed, because remote host does not properly setup or configured.
+It is also common that application was modified/changed to meet custom conditions.
+If so, it is important to identify what is the difference between standard and modified version.

src/App/Pages/_Index.cshtml

@@ -31,7 +31,7 @@
     <header class="header">
         <div class="container">
             <nav class="navbar navbar-expand-lg navbar-dark p-0">
-                <a class="navbar-brand" href="~/blog"><img src="~/assets/img/logo.png" alt="Blogifier"></a>
+                <a class="navbar-brand" href="~/blog"><img src="~/home/img/logo.png" alt="Blogifier"></a>
                 <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation"><span class="navbar-toggler-icon"></span></button>
                 <div class="collapse navbar-collapse" id="navbarSupportedContent">
                     <ul class="navbar-nav">