Fix all krazy #include warnings

- "include own header first line"
- "put config.h in angle brackets line"
- "do not include QtModule/QtClass line"

`QElapsedTimer` was implicitly included by
kfileitemmodelsortalgorithm.h, now we need to explicitly include it in
kfileitemmodel.cpp.

We also need to explicitly link to `Qt5::Concurrent`, otherwise we
cannot `#include <QtConcurrentRun>`.

src/CMakeLists.txt

@@ -137,6 +137,7 @@ generate_export_header(dolphinprivate BASE_NAME dolphin)
 target_link_libraries(
     dolphinprivate PUBLIC
     dolphinvcs
+    Qt5::Concurrent
     Qt5::Gui
     KF5::Crash
     KF5::I18n

src/global.cpp

@@ -17,15 +17,14 @@
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
-#include <QApplication>
-#include <QIcon>
+#include "global.h"
+#include "dolphindebug.h"
+#include "dolphin_generalsettings.h"
 
 #include <KRun>
 
-#include "global.h"
-#include "dolphindebug.h"
-
-#include "dolphin_generalsettings.h"
+#include <QApplication>
+#include <QIcon>
 
 QList<QUrl> Dolphin::validateUris(const QStringList& uriList)
 {

src/kitemviews/kfileitemmodel.cpp

@@ -31,6 +31,7 @@
 #include "private/kfileitemmodelsortalgorithm.h"
 #include "private/kfileitemmodeldirlister.h"
 
+#include <QElapsedTimer>
 #include <QMimeData>
 #include <QTimer>
 #include <QWidget>

src/kitemviews/kitemlistviewaccessible.h

@@ -24,10 +24,10 @@
 
 #include "dolphin_export.h"
 
-#include <QtCore/qpointer.h>
-#include <qaccessible.h>
-#include <qaccessibleobject.h>
-#include <QtWidgets/qaccessiblewidget.h>
+#include <QAccessible>
+#include <QAccessibleObject>
+#include <QAccessibleWidget>
+#include <QPointer>
 
 class KItemListView;
 class KItemListContainer;

src/kitemviews/private/kfileitemmodelsortalgorithm.h

@@ -22,7 +22,7 @@
 #ifndef KFILEITEMMODELSORTALGORITHM_H
 #define KFILEITEMMODELSORTALGORITHM_H
 
-#include <QtConcurrent/QtConcurrent>
+#include <QtConcurrentRun>
 
 #include <algorithm>
 

src/panels/information/filemetadataconfigurationdialog.h

@@ -22,7 +22,7 @@
 
 #include <QDialog>
 #include <KFileItem>
-#include "config-baloo.h"
+#include <config-baloo.h>
 
 #ifndef HAVE_BALOO
 class KFileMetaDataConfigurationWidget;

src/panels/information/informationpanelcontent.h

@@ -20,10 +20,11 @@
 #ifndef INFORMATIONPANELCONTENT_H
 #define INFORMATIONPANELCONTENT_H
 
-#include "config-baloo.h"
-#include <KFileItem>
-#include <QUrl>
+#include <config-baloo.h>
 
+#include <KFileItem>
+
+#include <QUrl>
 #include <QPointer>
 #include <QWidget>
 

src/statusbar/mountpointobserver.cpp

@@ -17,11 +17,11 @@
  *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA          *
  ***************************************************************************/
 
-#include <KIO/FileSystemFreeSpaceJob>
-
 #include "mountpointobserver.h"
 #include "mountpointobservercache.h"
 
+#include <KIO/FileSystemFreeSpaceJob>
+
 MountPointObserver::MountPointObserver(const QUrl& url, QObject* parent) :
     QObject(parent),
     m_url(url),

src/views/tooltips/dolphinfilemetadatawidget.h

@@ -23,7 +23,7 @@
 #define DOLPHINFILEMETADATAWIDGET_H
 
 #include <QWidget>
-#include "config-baloo.h"
+#include <config-baloo.h>
 
 class KFileItemList;
 class QLabel;