added tagsbar styles in separate css file

added a white x png which fits better the ui

simpleexample2/fxui/src/main/resources/simpleex/ui/tags/tagsbar.css

+  
+ /*******************************************************************************
+
+* CSS Styles for the TagsBar                         *
+
+******************************************************************************/
+   
+  .tags-bar {
+    -fx-background-color:white;
+    -fx-background-radius:10.0px;   
+    -fx-min-height: 45.0;
+    -fx-alignment:center-right;
+    -fx-spacing: 3.0px;
+    -fx-padding: 3.0px;
+ }
+
+ .tags-bar .tag {
+    -fx-background-color:black;
+    -fx-background-radius:3.0px;   
+    -fx-alignment: center;
+    -fx-padding:1.0px;
+    -fx-cursor:hand;
+ }
+ 
+  .tags-bar .tag .label{	
+  	-fx-text-fill:white;
+  	-fx-font-size:14.0px;
+  }
+  
+   
+   
\ No newline at end of file