fix(tagInput): set directive insted service and fix styles

src/app/pages/form/inputs/widgets/tagsInput/tagsInput.directive.js

@@ -6,10 +6,10 @@
   'use strict';
 
   angular.module('BlurAdmin.pages.form')
-      .service('tagsInput', tagsInput);
+      .directive('tagInput', tagInput);
 
   /** @ngInject */
-  function tagsInput() {
+  function tagInput() {
     return {
       restrict: 'A',
       link: function( $scope, elem, attr) {

src/sass/app/_email.scss

@@ -223,7 +223,7 @@
   margin-left: 6px;
 }
 
-.tag {
+.mail-panel .tag {
   text-transform: lowercase;
   font-size: 11px;
   font-weight: 100;