Moved Settings module files from Gemini.Demo to Gemini project.
Updated project files and namespaces after Settings module files move.
Basic settings view implementation.
Renamed and moved settings menu item.
Renamed Show.Dialog method. Added Show.Dialog for modal windows. Changed settings view to open method to modal.
Added shortcut keys to tools menu and options menu item
Added application settings to Gemini project. Added AutoHideMainMenu setting and related code.
Added main menu settings UI.
Changed settings view page view model to host a collection of settings editors.
Added demo application settings.
Fixed main menu initialization from settings.
Merge pull request #28 from 4ux-nbIx/settings

Settings view