Improved pagination for new dashboard

[viddo]

Fixes #2413

• Added the "edge" (only 1 as it was defined in the issue) if there are more pages than can be visible, just like how Github's own pagination works.
• Also update the pagination model immediately on click, to avoid the re-render delay until a response returns.

[viddo]

ping @xavijam code review
@saleiva you never answered my question in the issue, you want the "previous" and "next" links on the edges as well? :)

[xavijam]

First and last items don't have round corners and they "hide" grey border

.

[viddo]

Ouch, good catch. I'll look into that one

[viddo]

Fixed 4bbf2c8 -->

[Cartofante]

Frontend tests were OK 👍 (details)

[viddo]

Apart from that detail, any more feedback or OK to go?

[xavijam]

Reviewing :)

[xavijam]

🇬🇧

[Cartofante]

Frontend tests were OK 👍 (details)