Add 'Viewport Display Preset' tool to shelves/menus

GitHub issue #277.

Note the '---' line is not picked up in the menus. This appears to be
caused by a bug that I will fix later.

Author: david-cattermole

share/config/functions.json

@@ -919,6 +919,24 @@
                 "mmSolver.tools.toggleobjectmotiontrail.tool.main();"
             ]
         },
+        "cycle_active_viewport_display_preset_forward": {
+            "name": "Cycle Display Preset Forward",
+            "name_shelf": "fCycPS",
+            "tooltip": "Cycle the active viewport's display preset forward.",
+            "command": [
+                "import mmSolver.tools.setviewportdisplaypreset.tool;",
+                "mmSolver.tools.setviewportdisplaypreset.tool.active_viewport_cycle_forward();"
+            ]
+        },
+        "cycle_active_viewport_display_preset_backward": {
+            "name": "Cycle Display Preset Backward",
+            "name_shelf": "bCycPS",
+            "tooltip": "Cycle the active viewport's display preset backward.",
+            "command": [
+                "import mmSolver.tools.setviewportdisplaypreset.tool;",
+                "mmSolver.tools.setviewportdisplaypreset.tool.active_viewport_cycle_backward();"
+            ]
+        },
         "enable_holdout_all_meshes": {
             "name": "Enable Hold-Out For All Meshes",
             "name_shelf": "EnHOAll",

share/config/menu.json

@@ -83,6 +83,9 @@
             "display_tools/center_twodee_remove",
             "display_tools/center_twodee_ui",
             "display_tools/---",
+            "display_tools/cycle_active_viewport_display_preset_forward",
+            "display_tools/cycle_active_viewport_display_preset_backward",
+            "display_tools/---",
             "display_tools/toggle_viewport_geom",
             "display_tools/toggle_viewport_ctrls",
             "display_tools/toggle_viewport_imgplns",

share/config/shelf.json

@@ -80,6 +80,9 @@
             "display_tools/display_popup/center_twodee_remove",
             "display_tools/display_popup/center_twodee_ui",
             "display_tools/display_popup/---",
+            "display_tools/display_popup/cycle_active_viewport_display_preset_forward",
+            "display_tools/display_popup/cycle_active_viewport_display_preset_backward",
+            "display_tools/display_popup/---",
             "display_tools/display_popup/toggle_viewport_geom",
             "display_tools/display_popup/toggle_viewport_ctrls",
             "display_tools/display_popup/toggle_viewport_imgplns",

share/config/shelf_minimal.json

@@ -91,6 +91,9 @@
             "display_tools/display_popup/center_twodee_remove",
             "display_tools/display_popup/center_twodee_ui",
             "display_tools/display_popup/---",
+            "display_tools/display_popup/cycle_active_viewport_display_preset_forward",
+            "display_tools/display_popup/cycle_active_viewport_display_preset_backward",
+            "display_tools/display_popup/---",
             "display_tools/display_popup/toggle_viewport_geom",
             "display_tools/display_popup/toggle_viewport_ctrls",
             "display_tools/display_popup/toggle_viewport_imgplns",