Pivot implementation and redesign (#69)

- Pivot support implementation 
- Rename queries into inquiries
- Rename editor into workspace
- Change result set format
- New JSON format for inquiries
- Redesign panels

src/views/Main/index.vue

@@ -1,7 +1,7 @@
 <template>
   <div>
     <main-menu />
-    <keep-alive include="Editor">
+    <keep-alive include="Workspace">
       <router-view id="main-view" />
     </keep-alive>
   </div>