Feat(tag): New tag and delete tags

src/store/modules/config.js

@@ -43,6 +43,9 @@ export default {
     APPEND_TAG: (state, { tag }) => {
       Vue.set(state.tags, tag.name.toLowerCase(), tag)
     },
+    DELETE_TAG: (state, { tagname }) => {
+      Vue.delete(state.tags, tagname.toLowerCase())
+    },
     SET_CATEGORIES: (state, { categories }) => {
       state.categories = Object.keys(categories)
         .reduce((c, k) => (c[k.toLowerCase()] = categories[k], c), {})
@@ -75,11 +78,16 @@ export default {
         if (err) throw err
         console.log('The file has been saved!')
       })
-
     },
     edit_tag (context, tag) {
+      // Edit or append a tag to config
       context.commit('APPEND_TAG', { tag: tag })
       context.dispatch('save')
     },
+    delete_tag (context, tagname) {
+      // Revome a tag from the config
+      context.commit('DELETE_TAG', { tagname: tagname })
+      context.dispatch('save')
+    }
   }
 }