The context property version is slower to access and won't be supported
in Qt6. Let's port away from it and use the singleton version instead.
Here was my full process for making this change:
1. Made the change with `find . -name '*.qml' | xargs perl -pi -e 's/units\./PlasmaCore\.Units\./g'`
2. Verified no more occurrences with `grep -r " units."`
3. Made sure this didn't change any comments in a silly way by inspecting the output of `git diff | grep "+ " | grep "//"`
4. Manually inspected the full git diff to make sure there were no other unintentional or silly changes (there were none)
5. verified that all changed files have the PlasmaCore import with the correct name with `for FILE in `git status | grep modified | cut -d ":" -f 3`; do grep -q "as PlasmaCore" $FILE || echo "$FILE needs the PlasmaCore import"; done` (one needed the import)
Summary:
* remove unneeded cmake includes
* consistently use org.kde.plasma.* prefix for names
* fix catalog names to match applet identifier
* bump min cmake version to 3.0
* remove duplicated X-KDE-PluginInfo-Name entries
* remove no longer (Plasma >=5.8) needed i18nd in wallpaper code
* prepare qml extension for ki18n usage
Reviewers: mart
Reviewed By: mart
Subscribers: kde-frameworks-devel, apol
Tags: #frameworks
Differential Revision: https://phabricator.kde.org/D10848
Summary:
To avoid black text on black background and thus confusion if things are
working after the initial generation from the template and first test build
and installation, also set an background with themed color.
Reviewers: #plasma, mart
Reviewed By: #plasma, mart
Subscribers: #frameworks
Tags: #frameworks
Differential Revision: https://phabricator.kde.org/D11922
