Do not use pasteboard for yank/delete/pull

Uses the "" register instead
Add [no]pasteboard option to allow optional clipboard usage
Merge branch 'pasteboard'

* pasteboard:
  Add [no]pasteboard option to allow optional clipboard usage
  Do not use pasteboard for yank/delete/pull

Conflicts:
	Documents/Users/FeatureList.md
	XVim/XVimNormalEvaluator.m