Code review comment for lp:~and471/inkscape/gallery

Small feature requests (cont):
3) add a '_' (mnemonics ?) for the entry in the 'File' menu, to allow using 'Alt'-based keyboard shortcuts to open the gallery and possibly even add a default key-mapping to 'share/keys/default.xml', since the verb already exists for the dialog.

4) Change the verb to 'DialogGallery'?
Maybe use 'DialogGallery' instead of 'Gallery' to conform to the naming convention for verbs calling other dialogs?

$ inkscape --verb-list | grep Dialog
DialogGridArrange: Arrange selected objects in a table (Shift+Ctrl+R)
DialogPreferences: Edit global Inkscape preferences (Shift+Ctrl+P)
DialogDocumentProperties: Edit properties of this document (to be saved with the document) (Shift+Ctrl+D)
DialogMetadata: Edit document metadata (to be saved with the document)
DialogFillStroke: Edit objects' colors, gradients, arrowheads, and other fill and stroke properties... (Shift+Ctrl+F)
DialogGlyphs: Select characters from a glyphs palette
DialogSwatches: Select colors from a swatches palette (Shift+Ctrl+W)
DialogTransform: Precisely control objects' transformations (Shift+Ctrl+M)
DialogAlignDistribute: Align and distribute objects (Shift+Ctrl+A)
DialogSprayOption: Some options for the spray
DialogUndoHistory: Undo History (Shift+Ctrl+H)
DialogText: View and select font family, font size and other text properties (Shift+Ctrl+T)
DialogXMLEditor: View and edit the XML tree of the document (Shift+Ctrl+X)
DialogFind: Find objects in document (Ctrl+F)
DialogFindReplace: Find and replace text in document
DialogSpellcheck: Check spelling of text in document (Ctrl+Alt+K)
DialogDebug: View debug messages
DialogScript: Run scripts
DialogsToggle: Show or hide all open dialogs (F12)
DialogClonetiler: Create multiple clones of selected object, arranging them into a pattern or scattering (Shift+Ctrl+Alt+D)
DialogObjectProperties: Edit the ID, locked and visible status, and other object properties (Shift+Ctrl+O)
DialogInput: Configure extended input devices, such as a graphics tablet
DialogLayers: View Layers (Shift+Ctrl+L)
DialogLivePathEffect: Manage, edit, and apply path effects (Shift+Ctrl+7)
DialogFilterEffects: Manage, edit, and apply SVG filters
DialogSVGFonts: Edit SVG fonts
DialogPrintColorsPreview: Select which color separations to render in Print Colors Preview rendermode