D19925: Split up subcategories for KNS categories

[Dan Leinir Turthra Jensen]

leinir created this revision.
leinir added reviewers: Discover Software Store, apol, ngraham.
leinir added a project: Discover Software Store.
Herald added a project: Plasma.
Herald added a subscriber: plasma-devel.
leinir requested review of this revision.

REVISION SUMMARY
  This adds functionality to programmatically add subcategories (with a suitable warning not to do so after the initialisation stage), and uses that to perform a splitting of the subcategories supplied the KNewStuff backend.

TEST PLAN
  Previously: Many categories, with annoying and bad readability
  With patch: A nice dig-down tree of categories in the KDE Store applications category

REPOSITORY
  R134 Discover Software Store

REVISION DETAIL
  https://phabricator.kde.org/D19925

AFFECTED FILES
  libdiscover/Category/Category.cpp
  libdiscover/Category/Category.h
  libdiscover/backends/KNSBackend/KNSBackend.cpp

To: leinir, #discover_software_store, apol, ngraham
Cc: plasma-devel, #discover_software_store, jraleigh, bam, GB_2, ragreen, ixoos, Pitel, ZrenBot, James, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol, mart
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