trim @ and ' ' in user searchs, fix #28 & fix #30

src/BirdsiteLive/Controllers/UsersController.cs

@@ -48,6 +48,7 @@ namespace BirdsiteLive.Controllers
         [Route("/users/{id}")]
         public IActionResult Index(string id)
         {
+            id = id.Trim(new[] {' ', '@'});
             var user = _twitterService.GetUser(id);
 
             var r = Request.Headers["Accept"].First();

src/BirdsiteLive/Views/Users/Index.cshtml

@@ -33,5 +33,5 @@
     <br />
     <p>Search this handle to find it in your instance:</p>
 
-    <input type="text" name="textbox" value=" @ViewData.Model.InstanceHandle" onclick="this.select()" class="form-control" readonly/>
+    <input type="text" name="textbox" value="@ViewData.Model.InstanceHandle" onclick="this.select()" class="form-control" readonly/>
 </div>