le-interface: Add clock in the gnome-panel (Fallback)

Signed-off-by: Michael Liang <ml09@c3sl.ufpr.br>

le-interface/VERSAO

-0.0.33
+0.0.34

le-interface/pacote/etc/le/home_alunos/.config/gtk-3.0/bookmarks

+file:///home/dreamer/Documentos
+file:///home/dreamer/M%C3%BAsica
+file:///home/dreamer/Imagens
+file:///home/dreamer/V%C3%ADdeos
+file:///home/dreamer/Downloads

le-interface/pacote/etc/le/home_alunos/.config/gtk-3.0/gtk.css

@@ -19,16 +19,24 @@ PanelMenuBar.menubar.menuitem {
     background-image: none;
 	-PanelMenuBar-icon-visible: true;
 }
+
 PanelApplet .button,
 PanelApplet .button:prelight {
-    color: white;
+    color: black;
+}
+
+PanelApplet .button:hover{
+    text-shadow: 1 1 shade (black, 0.9);
+    background-color: rgba(0, 0, 0, 0.3);
 }
+
 PanelApplet .button:active:prelight:backdrop,
 PanelApplet .button:active:prelight,
 PanelApplet .button:active:backdrop,
 PanelApplet .button:active {
     border-image: none;
     border-color: rgba(250, 250, 250, 0.5);
+    background-color: rgba(0, 0, 0, 0.5);
 }
 
 PanelAppletFrame {

le-interface/pacote/etc/skel/.config/gtk-3.0/gtk.css

@@ -19,16 +19,24 @@ PanelMenuBar.menubar.menuitem {
     background-image: none;
 	-PanelMenuBar-icon-visible: true;
 }
+
 PanelApplet .button,
 PanelApplet .button:prelight {
     color: black;
 }
+
+PanelApplet .button:hover{
+    text-shadow: 1 1 shade (black, 0.9);
+    background-color: rgba(0, 0, 0, 0.3);
+}
+
 PanelApplet .button:active:prelight:backdrop,
 PanelApplet .button:active:prelight,
 PanelApplet .button:active:backdrop,
 PanelApplet .button:active {
     border-image: none;
     border-color: rgba(250, 250, 250, 0.5);
+    background-color: rgba(0, 0, 0, 0.5);
 }
 
 PanelAppletFrame {