Update Choqok website to use new theme and update content

Authored by scarpino on Jul 4 2019, 2:05 PM.

Description

Update Choqok website to use new theme and update content

Summary:
WIP: need screenshots (I don't have a twitter account so somebody else need to do it), some information are looking very outdated.

Screenshots need to be uploaded to https://phabricator.kde.org/source/websites-product-screenshots/ ;)

Test Plan:

Reviewers: KDE Promo, Choqok, kde-www, scarpino, jriddell

Reviewed By: KDE Promo, jriddell

Subscribers: ltoscano, jriddell

Differential Revision: https://phabricator.kde.org/D22187