Fix printview_button for master
Name of the notebook was not defined in command line call.
Replace extension by a call to keyboard_manager
Update to current master
Merge branch 'printview' of https://github.com/juhasch/IPython-notebook-extensions into printview

Conflicts:
	publishing/printview_button.js
Merge pull request #148 from juhasch/printview

Fix printview_button for master
Merge pull request #147 from juhasch/toggle-comments

Replace extension by a call to keyboard_manager
Use relative URL
Merge pull request #152 from juhasch/relativeurl

Use relative URL