Adding hover-able icons to timeline entries.

- Added notes and delete icons right and left entry marks respectively.
- Notes icon slide toggles the notes display (hidden by default).

www/css/ts-screen.scss

@@ -241,9 +241,33 @@ input {
 
         div { display: inline-block; }
 
+        .mark {
+            position: relative;
+
+            img.delete-icon {
+                display: none;
+                left: -20px;
+                position: absolute;
+                top: 6px;
+            }
+
+            img.notes-icon {
+                display: none;
+                margin-top: 6px;
+                float: right;
+            }
+        }
+
+        &:hover .mark img { display: inline; }
+
         .mark-input, .timestamp-input { display: none; }
 
-        .notes, .notes-input { display: none; }
+        .notes, .notes-input {
+            display: none;
+            font-family: Cantarell;
+            font-size: small;
+            padding-left: 1em;
+        }
            
         &.edit-mark {
             .mark-input { display: inline-block; }