UI Update: new filter section

[GrakePch]

New filter section at uploaded artifacts page

• Group the generating JSON button with filters, since they are functionally more related.
• Ungroup the sorting option with filters, since it is more like an option for previewing other than JSON generation.
• Show the information of the value range of the current page, right above the paginator.

New artifact sets filter by 2-piece bonus

As artifact sets are increasing, it isn't easy to find the set you want. Propose a filter by 2-piece (1-piece) bonus to categorize the sets to avoid a long list.

Other optimizations

• Hide the "new build" from the navigation bar in order to simplify the nav.
  • The "new build" button is now a floating action button on "builds" page.
• New home page
• Add icons for the config page. Also, slightly update the layout.

[LeiShi1313]

Thanks for the PR, it looks gorgeous!