Overview: Number sequences over time

[chaoran-chen]

Let's create a component that shows the absolute number of sequences over time. It is very similar to #3 which shows the relative number.

Tasks

• [x] #327
• [x] #316
• [x] #317
• [x] #318
• [x] #328
• [x] #330
• [x] #333
• [x] #417