Sub-Store 1.0版本

1. 移除了所有基于关键词的节点操作，统一使用基于正则表达式的节点操作。
2. UI的大量改进。

web/src/components/base/MaterialDropdown.vue

@@ -0,0 +1,70 @@
+<template>
+  <v-menu
+    v-model="value"
+    :transition="transition"
+    offset-y
+    v-bind="$attrs"
+  >
+    <template v-slot:activator="{ attrs, on }">
+      <v-btn
+        :color="color"
+        default
+        min-width="200"
+        rounded
+        v-bind="attrs"
+        v-on="on"
+      >
+        <slot />
+
+        <v-icon>
+          mdi-{{ value ? 'menu-up' : 'menu-down' }}
+        </v-icon>
+      </v-btn>
+    </template>
+
+    <v-sheet>
+      <v-list dense>
+        <v-list-item
+          v-for="(item, i) in items"
+          :key="i"
+          @click="$(`click:action-${item.id}`)"
+        >
+          <v-list-item-content>
+            <v-list-item-title v-text="item.text" />
+          </v-list-item-content>
+        </v-list-item>
+      </v-list>
+    </v-sheet>
+  </v-menu>
+</template>
+
+<script>
+  // Mixins
+  import Proxyable from 'vuetify/lib/mixins/proxyable'
+
+  export default {
+    name: 'MaterialDropdown',
+
+    mixins: [Proxyable],
+
+    props: {
+      color: {
+        type: String,
+        default: 'primary'
+      },
+      items: {
+        type: Array,
+        default: () => ([
+          {
+            id: undefined,
+            text: undefined
+          }
+        ])
+      },
+      transition: {
+        type: String,
+        default: 'scale-transition'
+      }
+    }
+  }
+</script>