KateModeMenuList: move to QListView
The new Mode menu introduced in D20958 is updated, removing the use of QListWidget.
QListWidget with QListView + QStandardItemModel
and KListWidgetSearchLine with QLineEdit
In addition, some changes are made:
- Decrease delay in displaying search results, after typing. The search clearing is done without delays.
- Add ToolTip in the search bar, with a brief description.
I also made small improvements to the code. From the user's point of view, this patch is almost imperceptible.
Reviewers: KTextEditor, cullmann, dhaumann
Reviewed By: KTextEditor, cullmann
Subscribers: ngraham, kwrite-devel, kde-frameworks-devel
Differential Revision: https://phabricator.kde.org/D21712