* app/widgets/gimppreview.c
* app/widgets/gimppreview.h: renamed these two files to...

* app/widgets/gimpview.c
* app/widgets/gimpview.h: ... these files.

Also renamed GimpPreview to GimpView.
This is the first step of the great Preview->View renaming process.

* app/actions/palettes-commands.c

* app/display/gimpdisplayshell-layer-select.c
* app/display/gimpnavigationview.c

* app/gui/palette-import-dialog.c

* app/tools/gimppaintoptions-gui.c

* app/widgets/Makefile.am
* app/widgets/gimpaction.c
* app/widgets/gimpactiongroup.c
* app/widgets/gimpbrusheditor.c
* app/widgets/gimpbufferview.c
* app/widgets/gimpcontainerbox.c
* app/widgets/gimpcontainergridview.c
* app/widgets/gimpcontainergridview.h
* app/widgets/gimpdevicestatus.c
* app/widgets/gimpdnd.c
* app/widgets/gimpdockbook.c
* app/widgets/gimpfiledialog.c
* app/widgets/gimpgradienteditor.c
* app/widgets/gimpnavigationpreview.c
* app/widgets/gimpnavigationpreview.h
* app/widgets/gimppaletteeditor.c
* app/widgets/gimppreview-popup.c
* app/widgets/gimppropwidgets.c
* app/widgets/gimpselectioneditor.c
* app/widgets/gimpthumbbox.c
* app/widgets/gimptoolbox-image-area.c
* app/widgets/gimptoolbox-indicator-area.c
* app/widgets/gimptooloptionseditor.c
* app/widgets/gimpviewabledialog.c
* app/widgets/widgets-types.h: changed accordingly.