Many small refinements to front/backend UI

Changes:
 - Added a friendlyTime helper for nicer timestamps
 - Added validation to most action methods
 - Added error flash to several template files
 - Now making use to c.RenderError() to handle action errors
 - Removed message list slideUp() effect, takes too long
 - Fixed a problem with my vim indentation configuration, so CSS and
   HTML should be indented more consistently.

app/views/Mailbox/Index.html

@@ -3,54 +3,54 @@
 {{template "header.html" .}}
 {{$name := .name}}
 <script>
-	function listLoaded() { 
-		$('.listEntry').hover(
-		function() {
-			$(this).addClass("listEntryHover")
-		},
-		function() {
-			$(this).removeClass("listEntryHover")
-		}
-		).click(
-		function() {
-			$('.listEntry').removeClass("listEntrySelected")
-			$(this).addClass("listEntrySelected")
-			$('#emailContent').load('/mailbox/show/{{$name}}/' + this.id)
-		}
-		)
-		$("#messageList").slideDown()
-	}
+  function listLoaded() { 
+    $('.listEntry').hover(
+    function() {
+      $(this).addClass("listEntryHover")
+    },
+    function() {
+      $(this).removeClass("listEntryHover")
+    }
+    ).click(
+    function() {
+      $('.listEntry').removeClass("listEntrySelected")
+      $(this).addClass("listEntrySelected")
+      $('#emailContent').load('/mailbox/show/{{$name}}/' + this.id)
+    }
+    )
+    $("#messageList").slideDown()
+  }
 
-	function loadList() {
-		$('#messageList').load("/mailbox/list/{{$name}}", listLoaded)
-	}
-	
-	function reloadList() {
-		$('#messageList').hide()
-		loadList()
-	}
+  function loadList() {
+    $('#messageList').load("/mailbox/list/{{$name}}", listLoaded)
+  }
 
-	function listInit() {
-		$("#messageList").hide()
-		loadList()
-	}
-	
-	function deleteMessage(id) {
-		$('#emailContent').empty()
-		$.ajax({
-			type: 'POST',
-			url: '/mailbox/delete/{{$name}}/' + id,
-			success: reloadList
-		})
-	}
+  function reloadList() {
+    $('#messageList').hide()
+    loadList()
+  }
 
-	function messageSource(id) {
-		window.open('/mailbox/source/{{$name}}/' + id, '_blank',
-			'width=800,height=600,' +
-			'menubar=no,resizable=yes,scrollbars=yes,status=no,toolbar=no')
-	}
+  function listInit() {
+    $("#messageList").hide()
+    loadList()
+  }
 
-	$(document).ready(listInit)
+  function deleteMessage(id) {
+    $('#emailContent').empty()
+    $.ajax({
+      type: 'POST',
+      url: '/mailbox/delete/{{$name}}/' + id,
+      success: reloadList
+    })
+  }
+
+  function messageSource(id) {
+    window.open('/mailbox/source/{{$name}}/' + id, '_blank',
+    'width=800,height=600,' +
+    'menubar=no,resizable=yes,scrollbars=yes,status=no,toolbar=no')
+  }
+
+  $(document).ready(listInit)
 </script>
 
 <div id="colOne">
@@ -59,12 +59,14 @@
     <h2>mail for {{.name}}</h2>
   </div>
   <div class="box" style="text-align:center; padding-bottom:10px;">
-	  <a href="javascript:reloadList()">Refresh List</a>
+    <a href="javascript:reloadList()">Refresh List</a>
   </div>
   <div id="messageList"></div>
 </div>
 
 <div id="colTwo">
+  {{template "errors.html" .}}
+
   <div id="emailContent">
     <p>Select a message at left, or enter a different username into the box on upper right.</p>
   </div>