fix: make transparency control work for color picker

Author: gabrieloliveirapinto

frontend/express/public/javascripts/countly/vue/components/input.js

@@ -43,7 +43,7 @@
         },
         methods: {
             setColor: function(color) {
-                this.$emit("input", color.hex);
+                this.$emit("input", color.hex8);
             },
             reset: function() {
                 this.setColor({hex: this.resetValue});
@@ -1358,4 +1358,4 @@
                     </div>'
     }));
 
-}(window.countlyVue = window.countlyVue || {}));
+}(window.countlyVue = window.countlyVue || {}));