css: year-view sidebar

add some padding and move no events label down a bit to better line
up with events in the list.

data/theme/gtk-styles.css

@@ -159,6 +159,7 @@ calendar-view.second-view-header {
 }
 
 .year-view .sidebar {
+    padding: 4px;
     border: 1px none @borders;
 }
 
@@ -173,6 +174,11 @@ calendar-view.second-view-header {
     border-right-style: solid;
 }
 
+/* no events label */
+.year-view box.sidebar:nth-child(2) {
+    margin-top: 4px;
+}
+
 .year-view button {
     border-radius: 0;
     border-bottom-style: none;