Package loading

This change creates a package and gets it loading on F5.  Still tons of
work to do but this is a simple first step that we can build on
Re-enabled the Colors.pkgdef file
Small cleanup items

- Got the actual menu item name correct
- Started getting the generated code to match our guidelines
Package can now display the options page
Removed options info from Vim.UI.Wpf

The WPF doesn't really have a notion of options.  It was just a
placeholder to put the options button.  Now that this relies in the
package code base we should remove all vestiges of the options code from
VimWpf
Fixes exception in :wq

This stops the exception in the :wq command by correctly checking for
IsClosed in the OnEnter method of normal mode.  Long term I'm not sure
this is the best approach though.  Running any mode code after the
ITextView is closed just invites further errors like this one.  I'm
beginning to wonder if a better approach would be to have a ClosedMode
which we switch to whenever SwitchPreviousMode is called and the
ITextView is closed.  This is the simplest fix that can be done for the
point release though.

closes #1327
Merge remote-tracking branch 'origin/master' into fixes-package

Conflicts:
	Src/VimWpf/Implementation/CommandMargin/CommandMarginProvider.cs
Basic code cleanup

Get the generated code in line with the style of VsVim
Fixed help about

The help about page now shows the proper version and VsVim icon
Options page displays with no open buffer

The options page can now display without an open IVimBuffer
When running any backspacing command fill in virtual spaces

Closes #1323

Conflicts:
	Test/VimCoreTest/InsertModeIntegrationTest.cs
Add failing test based on issue #1323
Fixed a missing unit test
Fixed a unit test bug
Released 1.6.0.2
Merge remote-tracking branch 'origin/master' into fixes-package
Beginnings of the options page is displaying

This is just the broad outline.  Need to actually fill in the details
now.
Got the key binding control in options page
Migrated options pages

The option pages are now fully migrated to the Tools -> Options -> VsVim
page
Cleaned up the options command