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

tests/lib/storedInquiries/_migrations.spec.js

@@ -0,0 +1,42 @@
+import { expect } from 'chai'
+import migrations from '@/lib/storedInquiries/_migrations'
+
+describe('_migrations.js', () => {
+  it('migrates from version 1 to the current', () => {
+    const oldInquiries = [
+      {
+        id: '123',
+        name: 'foo',
+        query: 'SELECT * FROM foo',
+        chart: { here_are: 'foo chart settings' },
+        createdAt: '2021-05-06T11:05:50.877Z'
+      },
+      {
+        id: '456',
+        name: 'bar',
+        query: 'SELECT * FROM bar',
+        chart: { here_are: 'bar chart settings' },
+        createdAt: '2021-05-07T11:05:50.877Z'
+      }
+    ]
+
+    expect(migrations._migrate(1, oldInquiries)).to.eql([
+      {
+        id: '123',
+        name: 'foo',
+        query: 'SELECT * FROM foo',
+        viewType: 'chart',
+        viewOptions: { here_are: 'foo chart settings' },
+        createdAt: '2021-05-06T11:05:50.877Z'
+      },
+      {
+        id: '456',
+        name: 'bar',
+        query: 'SELECT * FROM bar',
+        viewType: 'chart',
+        viewOptions: { here_are: 'bar chart settings' },
+        createdAt: '2021-05-07T11:05:50.877Z'
+      }
+    ])
+  })
+})