D5189: Partial rewrite to add and update info.

[the KDE fan]

ivanthekdefan added a subscriber: kde-doc-english.

REPOSITORY
  R119 Plasma Desktop

REVISION DETAIL
  https://phabricator.kde.org/D5189

To: ivanthekdefan, ltoscano, lueck, yurchor
Cc: kde-doc-english, plasma-devel, progwolff, lesliezhai, ali-mohamed, 
jensreuterberg, abetts, sebas, apol