Updated weather and power button icons to use text-icons rather than system icons. (#232)

* Replace weather and power icons with nerdfont icons.

* Update power icons for power dropdown menu.

scss/style/menus/dashboard.scss

@@ -53,17 +53,25 @@
         margin-bottom: 0.75em;
       }
 
-      image {
+      label {
         color: if($bar-menus-monochrome, $bar-menus-buttons-text, $bar-menus-menu-dashboard-shortcuts-text);
-        font-size: 1.5em;
+        font-size: 1.7em;
       }
 
       &.shutdown {
         background: if($bar-menus-monochrome, $bar-menus-buttons-default, $bar-menus-menu-dashboard-powermenu-shutdown);
+
+        label {
+          font-size: 1.9em;
+        }
       }
 
       &.restart {
         background: if($bar-menus-monochrome, $bar-menus-buttons-default, $bar-menus-menu-dashboard-powermenu-restart);
+
+        label {
+          font-size: 1.9em;
+        }
       }
 
       &.lock {
@@ -92,6 +100,7 @@
         }
       }
 
+
     }
   }
 
@@ -294,7 +303,7 @@
     .stat {
       label {
         margin-right: 0.75em;
-        font-size: 1.5em;
+        font-size: 1.3em;
         min-width: 1.65em;
       }